3992421132 has 72 divisors (see below), whose sum is σ = 12140710400. Its totient is φ = 1080654048.

The previous prime is 3992421077. The next prime is 3992421133. The reversal of 3992421132 is 2311242993.

3992421132 is a `hidden beast` number, since 399 + 24 + 211 + 32 = 666.

It is a super-2 number, since 2×3992421132² = 31878852990480322848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (3992421133) 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, 412132 + ... + 421707.

Almost surely, 2^3992421132 is an apocalyptic number.

It is an amenable number.

3992421132 is an abundant number, since it is smaller than the sum of its proper divisors (8148289268).

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

3992421132 is a wasteful number, since it uses less digits than its factorization.

3992421132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833875 (or 833870 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 3992421132 is about 63185.6085829677. The cubic root of 3992421132 is about 1586.3978595263.

The spelling of 3992421132 in words is "three billion, nine hundred ninety-two million, four hundred twenty-one thousand, one hundred thirty-two".