747144137 has 2 divisors, whose sum is σ = 747144138. Its totient is φ = 747144136.

The previous prime is 747144133. The next prime is 747144187. The reversal of 747144137 is 731441747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 690428176 + 56715961 = 26276^2 + 7531^2 .

It is a cyclic number.

It is not a de Polignac number, because 747144137 - 2² = 747144133 is a prime.

It is a super-2 number, since 2×747144137² = 1116448722906949538, which contains 22 as substring.

It is equal to p_38563463 and since 747144137 and 38563463 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 747144137.

It is not a weakly prime, because it can be changed into another prime (747144133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373572068 + 373572069.

It is an arithmetic number, because the mean of its divisors is an integer number (373572069).

Almost surely, 2^747144137 is an apocalyptic number.

It is an amenable number.

747144137 is a deficient number, since it is larger than the sum of its proper divisors (1).

747144137 is an equidigital number, since it uses as much as digits as its factorization.

747144137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65856, while the sum is 38.

The square root of 747144137 is about 27333.9374587709. The cubic root of 747144137 is about 907.4056190250.

The spelling of 747144137 in words is "seven hundred forty-seven million, one hundred forty-four thousand, one hundred thirty-seven".