74552399 has 4 divisors (see below), whose sum is σ = 74626440. Its totient is φ = 74478360.

The previous prime is 74552389. The next prime is 74552449. The reversal of 74552399 is 99325547.

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 74552399 - 2⁴ = 74552383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74552329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35489 + ... + 37530.

It is an arithmetic number, because the mean of its divisors is an integer number (18656610).

Almost surely, 2^74552399 is an apocalyptic number.

74552399 is a deficient number, since it is larger than the sum of its proper divisors (74041).

74552399 is a wasteful number, since it uses less digits than its factorization.

74552399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74040.

The product of its digits is 340200, while the sum is 44.

The square root of 74552399 is about 8634.3731098442. The cubic root of 74552399 is about 420.8757219357.

The spelling of 74552399 in words is "seventy-four million, five hundred fifty-two thousand, three hundred ninety-nine".