3900390669 has 24 divisors (see below), whose sum is σ = 6718687872. Its totient is φ = 2131889760.

The previous prime is 3900390653. The next prime is 3900390671. The reversal of 3900390669 is 9660930093.

It is not a de Polignac number, because 3900390669 - 2⁴ = 3900390653 is a prime.

It is a super-2 number, since 2×3900390669² = 30426094741644535122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3900390649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1344442 + ... + 1347339.

It is an arithmetic number, because the mean of its divisors is an integer number (279945328).

Almost surely, 2^3900390669 is an apocalyptic number.

It is an amenable number.

3900390669 is a deficient number, since it is larger than the sum of its proper divisors (2818297203).

3900390669 is a wasteful number, since it uses less digits than its factorization.

3900390669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691817 (or 2691814 counting only the distinct ones).

The product of its (nonzero) digits is 236196, while the sum is 45.

The square root of 3900390669 is about 62453.1077609433. The cubic root of 3900390669 is about 1574.1134735778.

The spelling of 3900390669 in words is "three billion, nine hundred million, three hundred ninety thousand, six hundred sixty-nine".