74399473 has 4 divisors (see below), whose sum is σ = 76799488. Its totient is φ = 71999460.

The previous prime is 74399453. The next prime is 74399491. The reversal of 74399473 is 37499347.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74399473 - 2⁵ = 74399441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74399453) 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, 1199961 + ... + 1200022.

It is an arithmetic number, because the mean of its divisors is an integer number (19199872).

Almost surely, 2^74399473 is an apocalyptic number.

It is an amenable number.

74399473 is a deficient number, since it is larger than the sum of its proper divisors (2400015).

74399473 is a wasteful number, since it uses less digits than its factorization.

74399473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400014.

The product of its digits is 571536, while the sum is 46.

The square root of 74399473 is about 8625.5129122853. The cubic root of 74399473 is about 420.5877504332.

The spelling of 74399473 in words is "seventy-four million, three hundred ninety-nine thousand, four hundred seventy-three".