74774393 has 2 divisors, whose sum is σ = 74774394. Its totient is φ = 74774392.

The previous prime is 74774363. The next prime is 74774419. The reversal of 74774393 is 39347747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46076944 + 28697449 = 6788^2 + 5357^2 .

It is a cyclic number.

It is not a de Polignac number, because 74774393 - 2⁸ = 74774137 is a prime.

It is not a weakly prime, because it can be changed into another prime (74774333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37387196 + 37387197.

It is an arithmetic number, because the mean of its divisors is an integer number (37387197).

Almost surely, 2^74774393 is an apocalyptic number.

It is an amenable number.

74774393 is a deficient number, since it is larger than the sum of its proper divisors (1).

74774393 is an equidigital number, since it uses as much as digits as its factorization.

74774393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 444528, while the sum is 44.

The square root of 74774393 is about 8647.2188014413. The cubic root of 74774393 is about 421.2930539165.

The spelling of 74774393 in words is "seventy-four million, seven hundred seventy-four thousand, three hundred ninety-three".