74388399 has 8 divisors (see below), whose sum is σ = 99850800. Its totient is φ = 49259136.

The previous prime is 74388373. The next prime is 74388403. The reversal of 74388399 is 99388347.

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

It is not a de Polignac number, because 74388399 - 2⁷ = 74388271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74388319) 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, 82762 + ... + 83655.

It is an arithmetic number, because the mean of its divisors is an integer number (12481350).

Almost surely, 2^74388399 is an apocalyptic number.

74388399 is a deficient number, since it is larger than the sum of its proper divisors (25462401).

74388399 is a wasteful number, since it uses less digits than its factorization.

74388399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166569.

The product of its digits is 1306368, while the sum is 51.

The square root of 74388399 is about 8624.8709555564. The cubic root of 74388399 is about 420.5668819168.

The spelling of 74388399 in words is "seventy-four million, three hundred eighty-eight thousand, three hundred ninety-nine".