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1129969 = 10632
BaseRepresentation
bin100010011110111110001
32010102000201
410103313301
5242124334
640115201
712414241
oct4236761
92112021
101129969
11701a65
12465b01
13307429
14215b21
15174c14
hex113df1

1129969 has 3 divisors (see below), whose sum is σ = 1131033. Its totient is φ = 1128906.

The previous prime is 1129963. The next prime is 1129991. The reversal of 1129969 is 9699211.

The square root of 1129969 is 1063.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1129969 - 27 = 1129841 is a prime.

It is a super-2 number, since 2×11299692 = 2553659881922, which contains 22 as substring.

It is a Duffinian number.

1129969 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1129963) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 532 + ... + 1594.

It is an arithmetic number, because the mean of its divisors is an integer number (377011).

21129969 is an apocalyptic number.

1129969 is the 1063-rd square number.

1129969 is the 532-nd centered octagonal number.

It is an amenable number.

1129969 is a deficient number, since it is larger than the sum of its proper divisors (1064).

1129969 is an frugal number, since it uses more digits than its factorization.

1129969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126 (or 1063 counting only the distinct ones).

The product of its digits is 8748, while the sum is 37.

The cubic root of 1129969 is about 104.1570912443.

The spelling of 1129969 in words is "one million, one hundred twenty-nine thousand, nine hundred sixty-nine".

Divisors: 1 1063 1129969