3904642731 has 8 divisors (see below), whose sum is σ = 5679480384. Its totient is φ = 2366450120.

The previous prime is 3904642681. The next prime is 3904642751. The reversal of 3904642731 is 1372464093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3904642731 - 2¹⁹ = 3904118443 is a prime.

It is a super-2 number, since 2×3904642731² = 30492469713502276722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3904642731.

It is not an unprimeable number, because it can be changed into a prime (3904642751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59161221 + ... + 59161286.

It is an arithmetic number, because the mean of its divisors is an integer number (709935048).

Almost surely, 2^3904642731 is an apocalyptic number.

3904642731 is a deficient number, since it is larger than the sum of its proper divisors (1774837653).

3904642731 is a wasteful number, since it uses less digits than its factorization.

3904642731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118322521.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 3904642731 is about 62487.1405250712. The cubic root of 3904642731 is about 1574.6852793179.

The spelling of 3904642731 in words is "three billion, nine hundred four million, six hundred forty-two thousand, seven hundred thirty-one".