74315399 has 2 divisors, whose sum is σ = 74315400. Its totient is φ = 74315398.

The previous prime is 74315359. The next prime is 74315431. The reversal of 74315399 is 99351347.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74315399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74315359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37157699 + 37157700.

It is an arithmetic number, because the mean of its divisors is an integer number (37157700).

Almost surely, 2^74315399 is an apocalyptic number.

74315399 is a deficient number, since it is larger than the sum of its proper divisors (1).

74315399 is an equidigital number, since it uses as much as digits as its factorization.

74315399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 41.

The square root of 74315399 is about 8620.6379694313. The cubic root of 74315399 is about 420.4292644431.

The spelling of 74315399 in words is "seventy-four million, three hundred fifteen thousand, three hundred ninety-nine".