74399279 has 8 divisors (see below), whose sum is σ = 75666048. Its totient is φ = 73137240.

The previous prime is 74399257. The next prime is 74399309. The reversal of 74399279 is 97299347.

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 74399279 - 2¹² = 74395183 is a prime.

It is a super-3 number, since 3×74399279³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74399209) 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 7 ways as a sum of consecutive naturals, for example, 45494 + ... + 47100.

It is an arithmetic number, because the mean of its divisors is an integer number (9458256).

Almost surely, 2^74399279 is an apocalyptic number.

74399279 is a deficient number, since it is larger than the sum of its proper divisors (1266769).

74399279 is a wasteful number, since it uses less digits than its factorization.

74399279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365.

The product of its digits is 857304, while the sum is 50.

The square root of 74399279 is about 8625.5016665699. The cubic root of 74399279 is about 420.5873848657.

The spelling of 74399279 in words is "seventy-four million, three hundred ninety-nine thousand, two hundred seventy-nine".