74488979 has 2 divisors, whose sum is σ = 74488980. Its totient is φ = 74488978.

The previous prime is 74488867. The next prime is 74488993. The reversal of 74488979 is 97988447.

It is a strong prime.

It is an emirp because it is prime and its reverse (97988447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74488979 - 2⁸ = 74488723 is a prime.

It is not a weakly prime, because it can be changed into another prime (74488079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37244489 + 37244490.

It is an arithmetic number, because the mean of its divisors is an integer number (37244490).

Almost surely, 2^74488979 is an apocalyptic number.

74488979 is a deficient number, since it is larger than the sum of its proper divisors (1).

74488979 is an equidigital number, since it uses as much as digits as its factorization.

74488979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 56.

The square root of 74488979 is about 8630.6997978148. The cubic root of 74488979 is about 420.7563450010.

The spelling of 74488979 in words is "seventy-four million, four hundred eighty-eight thousand, nine hundred seventy-nine".