74500139 has 12 divisors (see below), whose sum is σ = 88301664. Its totient is φ = 62650224.

The previous prime is 74500079. The next prime is 74500147. The reversal of 74500139 is 93100547.

It is not a de Polignac number, because 74500139 - 2¹² = 74496043 is a prime.

It is a super-2 number, since 2×74500139² = 11100541422038642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74500169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11747 + ... + 16940.

It is an arithmetic number, because the mean of its divisors is an integer number (7358472).

Almost surely, 2^74500139 is an apocalyptic number.

74500139 is a deficient number, since it is larger than the sum of its proper divisors (13801525).

74500139 is a wasteful number, since it uses less digits than its factorization.

74500139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28754 (or 28747 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 74500139 is about 8631.3463028661. The cubic root of 74500139 is about 420.7773566388. Note that the first 3 decimals are identical.

The spelling of 74500139 in words is "seventy-four million, five hundred thousand, one hundred thirty-nine".