74399959 has 2 divisors, whose sum is σ = 74399960. Its totient is φ = 74399958.

The previous prime is 74399957. The next prime is 74399999. The reversal of 74399959 is 95999347.

It is a weak prime.

It is an emirp because it is prime and its reverse (95999347) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74399959 - 2¹ = 74399957 is a prime.

Together with 74399957, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74399957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37199979 + 37199980.

It is an arithmetic number, because the mean of its divisors is an integer number (37199980).

Almost surely, 2^74399959 is an apocalyptic number.

74399959 is a deficient number, since it is larger than the sum of its proper divisors (1).

74399959 is an equidigital number, since it uses as much as digits as its factorization.

74399959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2755620, while the sum is 55.

The square root of 74399959 is about 8625.5410844770. The cubic root of 74399959 is about 420.5886662336.

The spelling of 74399959 in words is "seventy-four million, three hundred ninety-nine thousand, nine hundred fifty-nine".