4372052391 has 72 divisors (see below), whose sum is σ = 7551608064. Its totient is φ = 2429028000.

The previous prime is 4372052327. The next prime is 4372052393. The reversal of 4372052391 is 1932502734.

4372052391 is a `hidden beast` number, since 43 + 7 + 2 + 0 + 523 + 91 = 666.

It is not a de Polignac number, because 4372052391 - 2⁶ = 4372052327 is a prime.

It is a super-2 number, since 2×4372052391² = 38229684219297633762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4372052393) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5821266 + ... + 5822016.

Almost surely, 2^4372052391 is an apocalyptic number.

4372052391 is a deficient number, since it is larger than the sum of its proper divisors (3179555673).

4372052391 is a wasteful number, since it uses less digits than its factorization.

4372052391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121 (or 1111 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 4372052391 is about 66121.4971926680. The cubic root of 4372052391 is about 1635.1657649737.

The spelling of 4372052391 in words is "four billion, three hundred seventy-two million, fifty-two thousand, three hundred ninety-one".