74092139 has 24 divisors (see below), whose sum is σ = 85985856. Its totient is φ = 63277200.

The previous prime is 74092133. The next prime is 74092157. The reversal of 74092139 is 93129047.

It is not a de Polignac number, because 74092139 - 2¹² = 74088043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74092099 and 74092108.

It is not an unprimeable number, because it can be changed into a prime (74092133) 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, 454472 + ... + 454634.

It is an arithmetic number, because the mean of its divisors is an integer number (3582744).

Almost surely, 2^74092139 is an apocalyptic number.

74092139 is a deficient number, since it is larger than the sum of its proper divisors (11893717).

74092139 is a wasteful number, since it uses less digits than its factorization.

74092139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 74092139 is about 8607.6790716197. The cubic root of 74092139 is about 420.0078210940.

The spelling of 74092139 in words is "seventy-four million, ninety-two thousand, one hundred thirty-nine".