3990088512 has 140 divisors (see below), whose sum is σ = 12117002436. Its totient is φ = 1297520640.

The previous prime is 3990088499. The next prime is 3990088519. The reversal of 3990088512 is 2158800993.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2375977536 + 1614110976 = 48744^2 + 40176^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990088519) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 203158 + ... + 221930.

Almost surely, 2^3990088512 is an apocalyptic number.

3990088512 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3990088512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6058501218).

3990088512 is an abundant number, since it is smaller than the sum of its proper divisors (8126913924).

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

3990088512 is a wasteful number, since it uses less digits than its factorization.

3990088512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18838 (or 18819 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 3990088512 is about 63167.1474106596. The cubic root of 3990088512 is about 1586.0888420014.

The spelling of 3990088512 in words is "three billion, nine hundred ninety million, eighty-eight thousand, five hundred twelve".