749992137 has 4 divisors (see below), whose sum is σ = 999989520. Its totient is φ = 499994756.

The previous prime is 749992121. The next prime is 749992163. The reversal of 749992137 is 731299947.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 749992137 - 2⁴ = 749992121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 749992137.

It is not an unprimeable number, because it can be changed into a prime (749992237) 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 in 3 ways as a sum of consecutive naturals, for example, 124998687 + ... + 124998692.

It is an arithmetic number, because the mean of its divisors is an integer number (249997380).

Almost surely, 2^749992137 is an apocalyptic number.

It is an amenable number.

749992137 is a deficient number, since it is larger than the sum of its proper divisors (249997383).

749992137 is a wasteful number, since it uses less digits than its factorization.

749992137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249997382.

The product of its digits is 857304, while the sum is 51.

The square root of 749992137 is about 27385.9843167997. The cubic root of 749992137 is about 908.5571212896.

The spelling of 749992137 in words is "seven hundred forty-nine million, nine hundred ninety-two thousand, one hundred thirty-seven".