756109989 has 12 divisors (see below), whose sum is σ = 1092489216. Its totient is φ = 503920872.

The previous prime is 756109951. The next prime is 756109999. The reversal of 756109989 is 989901657.

It is not a de Polignac number, because 756109989 - 2⁹ = 756109477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (756109909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24412 + ... + 45914.

It is an arithmetic number, because the mean of its divisors is an integer number (91040768).

Almost surely, 2^756109989 is an apocalyptic number.

It is an amenable number.

756109989 is a deficient number, since it is larger than the sum of its proper divisors (336379227).

756109989 is a wasteful number, since it uses less digits than its factorization.

756109989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25416 (or 25413 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 54.

The square root of 756109989 is about 27497.4542276190. The cubic root of 756109989 is about 911.0208681749.

The spelling of 756109989 in words is "seven hundred fifty-six million, one hundred nine thousand, nine hundred eighty-nine".