74790979 has 2 divisors, whose sum is σ = 74790980. Its totient is φ = 74790978.

The previous prime is 74790931. The next prime is 74791001. The reversal of 74790979 is 97909747.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74790979 - 2¹⁹ = 74266691 is a prime.

It is not a weakly prime, because it can be changed into another prime (74791979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37395489 + 37395490.

It is an arithmetic number, because the mean of its divisors is an integer number (37395490).

Almost surely, 2^74790979 is an apocalyptic number.

74790979 is a deficient number, since it is larger than the sum of its proper divisors (1).

74790979 is an equidigital number, since it uses as much as digits as its factorization.

74790979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1000188, while the sum is 52.

The square root of 74790979 is about 8648.1777849441. The cubic root of 74790979 is about 421.3242011659.

The spelling of 74790979 in words is "seventy-four million, seven hundred ninety thousand, nine hundred seventy-nine".