744402157 has 2 divisors, whose sum is σ = 744402158. Its totient is φ = 744402156.

The previous prime is 744402143. The next prime is 744402161. The reversal of 744402157 is 751204447.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 739513636 + 4888521 = 27194^2 + 2211^2 .

It is a cyclic number.

It is not a de Polignac number, because 744402157 - 2²³ = 736013549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (744402167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372201078 + 372201079.

It is an arithmetic number, because the mean of its divisors is an integer number (372201079).

Almost surely, 2^744402157 is an apocalyptic number.

It is an amenable number.

744402157 is a deficient number, since it is larger than the sum of its proper divisors (1).

744402157 is an equidigital number, since it uses as much as digits as its factorization.

744402157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31360, while the sum is 34.

The square root of 744402157 is about 27283.7342935310. The cubic root of 744402157 is about 906.2942145562.

The spelling of 744402157 in words is "seven hundred forty-four million, four hundred two thousand, one hundred fifty-seven".