3990992894 has 16 divisors (see below), whose sum is σ = 6843872256. Its totient is φ = 1709883000.

The previous prime is 3990992869. The next prime is 3990992899. The reversal of 3990992894 is 4982990993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990992899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2219 + ... + 89369.

It is an arithmetic number, because the mean of its divisors is an integer number (427742016).

Almost surely, 2^3990992894 is an apocalyptic number.

3990992894 is a deficient number, since it is larger than the sum of its proper divisors (2852879362).

3990992894 is a wasteful number, since it uses less digits than its factorization.

3990992894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90431.

The product of its (nonzero) digits is 11337408, while the sum is 62.

The square root of 3990992894 is about 63174.3056471537. The cubic root of 3990992894 is about 1586.2086657291.

The spelling of 3990992894 in words is "three billion, nine hundred ninety million, nine hundred ninety-two thousand, eight hundred ninety-four".