3129569940 has 96 divisors (see below), whose sum is σ = 10023358464. Its totient is φ = 714706560.

The previous prime is 3129569921. The next prime is 3129569951. The reversal of 3129569940 is 499659213.

It is a self number, because there is not a number n which added to its sum of digits gives 3129569940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 622035 + ... + 627045.

It is an arithmetic number, because the mean of its divisors is an integer number (104409984).

Almost surely, 2^3129569940 is an apocalyptic number.

3129569940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3129569940 is an abundant number, since it is smaller than the sum of its proper divisors (6893788524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3129569940 is a wasteful number, since it uses less digits than its factorization.

3129569940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6517 (or 6515 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 48.

The square root of 3129569940 is about 55942.5592907582. The cubic root of 3129569940 is about 1462.7211932227.

The spelling of 3129569940 in words is "three billion, one hundred twenty-nine million, five hundred sixty-nine thousand, nine hundred forty".