74399999 has 2 divisors, whose sum is σ = 74400000. Its totient is φ = 74399998.

The previous prime is 74399959. The next prime is 74400017. The reversal of 74399999 is 99999347.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74399999 - 2²⁰ = 73351423 is a prime.

It is a Chen prime.

74399999 is a modest number, since divided by 9999 gives 7439 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74399959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37199999 + 37200000.

It is an arithmetic number, because the mean of its divisors is an integer number (37200000).

Almost surely, 2^74399999 is an apocalyptic number.

74399999 is a deficient number, since it is larger than the sum of its proper divisors (1).

74399999 is an equidigital number, since it uses as much as digits as its factorization.

74399999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4960116, while the sum is 59.

The square root of 74399999 is about 8625.5434031718. The cubic root of 74399999 is about 420.5887416079.

The spelling of 74399999 in words is "seventy-four million, three hundred ninety-nine thousand, nine hundred ninety-nine".