74507979 has 48 divisors (see below), whose sum is σ = 125841408. Its totient is φ = 38864448.

The previous prime is 74507977. The next prime is 74508001. The reversal of 74507979 is 97970547.

It is not a de Polignac number, because 74507979 - 2¹ = 74507977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74507977) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 242544 + ... + 242850.

It is an arithmetic number, because the mean of its divisors is an integer number (2621696).

Almost surely, 2^74507979 is an apocalyptic number.

74507979 is a deficient number, since it is larger than the sum of its proper divisors (51333429).

74507979 is a wasteful number, since it uses less digits than its factorization.

74507979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 48.

The square root of 74507979 is about 8631.8004495007. The cubic root of 74507979 is about 420.7921162478.

The spelling of 74507979 in words is "seventy-four million, five hundred seven thousand, nine hundred seventy-nine".