3909131684 has 6 divisors (see below), whose sum is σ = 6840980454. Its totient is φ = 1954565840.

The previous prime is 3909131663. The next prime is 3909131693. The reversal of 3909131684 is 4861319093.

It can be written as a sum of positive squares in only one way, i.e., 3049469284 + 859662400 = 55222^2 + 29320^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488641457 + ... + 488641464.

It is an arithmetic number, because the mean of its divisors is an integer number (1140163409).

Almost surely, 2^3909131684 is an apocalyptic number.

It is an amenable number.

3909131684 is a deficient number, since it is larger than the sum of its proper divisors (2931848770).

3909131684 is a wasteful number, since it uses less digits than its factorization.

3909131684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977282925 (or 977282923 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 3909131684 is about 62523.0492218670. The cubic root of 3909131684 is about 1575.2884912374.

The spelling of 3909131684 in words is "three billion, nine hundred nine million, one hundred thirty-one thousand, six hundred eighty-four".