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6989053 = 43316141
BaseRepresentation
bin11010101010010011111101
3111011002011211
4122222103331
53242122203
6405444421
7113256151
oct32522375
914132154
106989053
113a43a85
122410711
1315a9246
14cdd061
15930c6d
hex6aa4fd

6989053 has 4 divisors (see below), whose sum is σ = 7005628. Its totient is φ = 6972480.

The previous prime is 6989039. The next prime is 6989063. The reversal of 6989053 is 3509896.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1708249 + 5280804 = 1307^2 + 2298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-6989053 is a prime.

It is a Duffinian number.

6989053 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6988997 and 6989015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6989063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7638 + ... + 8503.

It is an arithmetic number, because the mean of its divisors is an integer number (1751407).

Almost surely, 26989053 is an apocalyptic number.

It is an amenable number.

6989053 is a deficient number, since it is larger than the sum of its proper divisors (16575).

6989053 is a wasteful number, since it uses less digits than its factorization.

6989053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16574.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 6989053 is about 2643.6817130661. The cubic root of 6989053 is about 191.1933478805.

The spelling of 6989053 in words is "six million, nine hundred eighty-nine thousand, fifty-three".

Divisors: 1 433 16141 6989053