74474779 has 2 divisors, whose sum is σ = 74474780. Its totient is φ = 74474778.

The previous prime is 74474767. The next prime is 74474783. The reversal of 74474779 is 97747447.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74474779 - 2¹¹ = 74472731 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74474789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37237389 + 37237390.

It is an arithmetic number, because the mean of its divisors is an integer number (37237390).

Almost surely, 2^74474779 is an apocalyptic number.

74474779 is a deficient number, since it is larger than the sum of its proper divisors (1).

74474779 is an equidigital number, since it uses as much as digits as its factorization.

74474779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1382976, while the sum is 49.

The square root of 74474779 is about 8629.8771138412. The cubic root of 74474779 is about 420.7296067288.

The spelling of 74474779 in words is "seventy-four million, four hundred seventy-four thousand, seven hundred seventy-nine".