3990036624 has 40 divisors (see below), whose sum is σ = 11780109120. Its totient is φ = 1140010368.

The previous prime is 3990036623. The next prime is 3990036653. The reversal of 3990036624 is 4266300993.

It is a super-2 number, since 2×3990036624² = 31840784521722634752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (3990036623) 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, 5937219 + ... + 5937890.

It is an arithmetic number, because the mean of its divisors is an integer number (294502728).

Almost surely, 2^3990036624 is an apocalyptic number.

It is an amenable number.

3990036624 is an abundant number, since it is smaller than the sum of its proper divisors (7790072496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3990036624 is a wasteful number, since it uses less digits than its factorization.

3990036624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11875127 (or 11875121 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 42.

The square root of 3990036624 is about 63166.7366894950. The cubic root of 3990036624 is about 1586.0819666874.

The spelling of 3990036624 in words is "three billion, nine hundred ninety million, thirty-six thousand, six hundred twenty-four".