4087991332 has 24 divisors (see below), whose sum is σ = 7270938080. Its totient is φ = 2010666240.

The previous prime is 4087991329. The next prime is 4087991357. The reversal of 4087991332 is 2331997804.

4087991332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187732 + ... + 208372.

Almost surely, 2^4087991332 is an apocalyptic number.

It is an amenable number.

4087991332 is a deficient number, since it is larger than the sum of its proper divisors (3182946748).

4087991332 is a wasteful number, since it uses less digits than its factorization.

4087991332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21451 (or 21449 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 4087991332 is about 63937.4016675686. The cubic root of 4087991332 is about 1598.9565243095.

The spelling of 4087991332 in words is "four billion, eighty-seven million, nine hundred ninety-one thousand, three hundred thirty-two".