74280939 has 16 divisors (see below), whose sum is σ = 105546528. Its totient is φ = 46305792.

The previous prime is 74280917. The next prime is 74280949. The reversal of 74280939 is 93908247.

It is not a de Polignac number, because 74280939 - 2¹⁶ = 74215403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74280939.

It is not an unprimeable number, because it can be changed into a prime (74280949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3369 + ... + 12645.

It is an arithmetic number, because the mean of its divisors is an integer number (6596658).

Almost surely, 2^74280939 is an apocalyptic number.

74280939 is a deficient number, since it is larger than the sum of its proper divisors (31265589).

74280939 is a wasteful number, since it uses less digits than its factorization.

74280939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9454.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 74280939 is about 8618.6390456963. The cubic root of 74280939 is about 420.3642701414.

The spelling of 74280939 in words is "seventy-four million, two hundred eighty thousand, nine hundred thirty-nine".