74545939 has 8 divisors (see below), whose sum is σ = 80558352. Its totient is φ = 68573280.

The previous prime is 74545909. The next prime is 74545951. The reversal of 74545939 is 93954547.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74545939 - 2¹⁵ = 74513171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74545909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5977 + ... + 13594.

It is an arithmetic number, because the mean of its divisors is an integer number (10069794).

Almost surely, 2^74545939 is an apocalyptic number.

74545939 is a deficient number, since it is larger than the sum of its proper divisors (6012413).

74545939 is a wasteful number, since it uses less digits than its factorization.

74545939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19877.

The product of its digits is 680400, while the sum is 46.

The square root of 74545939 is about 8633.9990155200. Note that the first 3 decimals coincide. The cubic root of 74545939 is about 420.8635652257.

The spelling of 74545939 in words is "seventy-four million, five hundred forty-five thousand, nine hundred thirty-nine".