74861239 has 4 divisors (see below), whose sum is σ = 74902960. Its totient is φ = 74819520.

The previous prime is 74861233. The next prime is 74861261. The reversal of 74861239 is 93216847.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74861239 - 2³ = 74861231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74861231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18042 + ... + 21799.

It is an arithmetic number, because the mean of its divisors is an integer number (18725740).

Almost surely, 2^74861239 is an apocalyptic number.

74861239 is a deficient number, since it is larger than the sum of its proper divisors (41721).

74861239 is a wasteful number, since it uses less digits than its factorization.

74861239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41720.

The product of its digits is 72576, while the sum is 40.

The square root of 74861239 is about 8652.2389587898. The cubic root of 74861239 is about 421.4560930687.

The spelling of 74861239 in words is "seventy-four million, eight hundred sixty-one thousand, two hundred thirty-nine".