74793913 has 2 divisors, whose sum is σ = 74793914. Its totient is φ = 74793912.

The previous prime is 74793893. The next prime is 74793973. The reversal of 74793913 is 31939747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73324969 + 1468944 = 8563^2 + 1212^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74793913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74793913.

It is not a weakly prime, because it can be changed into another prime (74793973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37396956 + 37396957.

It is an arithmetic number, because the mean of its divisors is an integer number (37396957).

Almost surely, 2^74793913 is an apocalyptic number.

It is an amenable number.

74793913 is a deficient number, since it is larger than the sum of its proper divisors (1).

74793913 is an equidigital number, since it uses as much as digits as its factorization.

74793913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 43.

The square root of 74793913 is about 8648.3474143908. The cubic root of 74793913 is about 421.3297105159.

The spelling of 74793913 in words is "seventy-four million, seven hundred ninety-three thousand, nine hundred thirteen".