75992139 has 6 divisors (see below), whose sum is σ = 109766436. Its totient is φ = 50661420.

The previous prime is 75992131. The next prime is 75992141. The reversal of 75992139 is 93129957.

It is a happy number.

75992139 is a `hidden beast` number, since 7 + 599 + 21 + 39 = 666.

It is not a de Polignac number, because 75992139 - 2³ = 75992131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75992094 and 75992103.

It is not an unprimeable number, because it can be changed into a prime (75992131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4221777 + ... + 4221794.

It is an arithmetic number, because the mean of its divisors is an integer number (18294406).

Almost surely, 2^75992139 is an apocalyptic number.

75992139 is a deficient number, since it is larger than the sum of its proper divisors (33774297).

75992139 is a wasteful number, since it uses less digits than its factorization.

75992139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8443577 (or 8443574 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 75992139 is about 8717.3470161512. The cubic root of 75992139 is about 423.5677536197.

The spelling of 75992139 in words is "seventy-five million, nine hundred ninety-two thousand, one hundred thirty-nine".