3990949135492 has 24 divisors (see below), whose sum is σ = 7710880921632. Its totient is φ = 1792211548800.

The previous prime is 3990949135451. The next prime is 3990949135493. The reversal of 3990949135492 is 2945319490993.

It is not an unprimeable number, because it can be changed into a prime (3990949135493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546402309 + ... + 546409612.

It is an arithmetic number, because the mean of its divisors is an integer number (321286705068).

Almost surely, 2^{3990949135492} is an apocalyptic number.

It is an amenable number.

3990949135492 is a deficient number, since it is larger than the sum of its proper divisors (3719931786140).

3990949135492 is a wasteful number, since it uses less digits than its factorization.

3990949135492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092812019 (or 1092812017 counting only the distinct ones).

The product of its (nonzero) digits is 85030560, while the sum is 67.

The spelling of 3990949135492 in words is "three trillion, nine hundred ninety billion, nine hundred forty-nine million, one hundred thirty-five thousand, four hundred ninety-two".