74370399 has 4 divisors (see below), whose sum is σ = 99160536. Its totient is φ = 49580264.

The previous prime is 74370391. The next prime is 74370409. The reversal of 74370399 is 99307347.

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 74370399 - 2³ = 74370391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74370399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74370391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12395064 + ... + 12395069.

It is an arithmetic number, because the mean of its divisors is an integer number (24790134).

Almost surely, 2^74370399 is an apocalyptic number.

74370399 is a deficient number, since it is larger than the sum of its proper divisors (24790137).

74370399 is a wasteful number, since it uses less digits than its factorization.

74370399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24790136.

The product of its (nonzero) digits is 142884, while the sum is 42.

The square root of 74370399 is about 8623.8273985511. The cubic root of 74370399 is about 420.5329572070.

The spelling of 74370399 in words is "seventy-four million, three hundred seventy thousand, three hundred ninety-nine".