749172492 has 36 divisors (see below), whose sum is σ = 1908664576. Its totient is φ = 247756320.

The previous prime is 749172481. The next prime is 749172517. The reversal of 749172492 is 294271947.

It is a happy number.

749172492 is a `hidden beast` number, since 7 + 4 + 91 + 72 + 492 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×749172492² = 1122518845538980128, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77359 + ... + 86502.

Almost surely, 2^749172492 is an apocalyptic number.

It is an amenable number.

749172492 is an abundant number, since it is smaller than the sum of its proper divisors (1159492084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

749172492 is a wasteful number, since it uses less digits than its factorization.

749172492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163998 (or 163993 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 749172492 is about 27371.0155456461. The cubic root of 749172492 is about 908.2260219288.

The spelling of 749172492 in words is "seven hundred forty-nine million, one hundred seventy-two thousand, four hundred ninety-two".