749180889 has 6 divisors (see below), whose sum is σ = 1082150186. Its totient is φ = 499453920.

The previous prime is 749180881. The next prime is 749180891. The reversal of 749180889 is 988081947.

It can be written as a sum of positive squares in only one way, i.e., 387420489 + 361760400 = 19683^2 + 19020^2 .

It is not a de Polignac number, because 749180889 - 2³ = 749180881 is a prime.

It is a super-2 number, since 2×749180889² = 1122544008885660642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (749180881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41621152 + ... + 41621169.

Almost surely, 2^749180889 is an apocalyptic number.

It is an amenable number.

749180889 is a deficient number, since it is larger than the sum of its proper divisors (332969297).

749180889 is a wasteful number, since it uses less digits than its factorization.

749180889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83242327 (or 83242324 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 749180889 is about 27371.1689374057. The cubic root of 749180889 is about 908.2294151595.

The spelling of 749180889 in words is "seven hundred forty-nine million, one hundred eighty thousand, eight hundred eighty-nine".