Base | Representation |
---|---|
bin | 101001111001100101001 |
3 | 2120202100201 |
4 | 11033030221 |
5 | 322413334 |
6 | 45232201 |
7 | 14445553 |
oct | 5171451 |
9 | 2522321 |
10 | 1372969 |
11 | 858594 |
12 | 562661 |
13 | 390c10 |
14 | 27a4d3 |
15 | 1c1c14 |
hex | 14f329 |
1372969 has 4 divisors (see below), whose sum is σ = 1478596. Its totient is φ = 1267344.
The previous prime is 1372963. The next prime is 1372979. The reversal of 1372969 is 9692731.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9692731 = 181 ⋅53551.
It can be written as a sum of positive squares in 2 ways, for example, as 672400 + 700569 = 820^2 + 837^2 .
It is not a de Polignac number, because 1372969 - 23 = 1372961 is a prime.
It is a super-2 number, since 2×13729692 = 3770087749922, which contains 22 as substring.
It is an Ulam number.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1372961) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52794 + ... + 52819.
It is an arithmetic number, because the mean of its divisors is an integer number (369649).
21372969 is an apocalyptic number.
It is an amenable number.
1372969 is a deficient number, since it is larger than the sum of its proper divisors (105627).
1372969 is a wasteful number, since it uses less digits than its factorization.
1372969 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 105626.
The product of its digits is 20412, while the sum is 37.
The square root of 1372969 is about 1171.7375986116. The cubic root of 1372969 is about 111.1442272030.
The spelling of 1372969 in words is "one million, three hundred seventy-two thousand, nine hundred sixty-nine".
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