1099500172 has 12 divisors (see below), whose sum is σ = 1930974696. Its totient is φ = 547793120.

The previous prime is 1099500169. The next prime is 1099500191. The reversal of 1099500172 is 2710059901.

It is a pancake number, because a pancake can be divided into 1099500172 parts by 46893 straight cuts.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487978 + ... + 490225.

It is an arithmetic number, because the mean of its divisors is an integer number (160914558).

Almost surely, 2^1099500172 is an apocalyptic number.

It is an amenable number.

1099500172 is a deficient number, since it is larger than the sum of its proper divisors (831474524).

1099500172 is a wasteful number, since it uses less digits than its factorization.

1099500172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978488 (or 978486 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 1099500172 is about 33158.7118567655. The cubic root of 1099500172 is about 1032.1237394944.

The spelling of 1099500172 in words is "one billion, ninety-nine million, five hundred thousand, one hundred seventy-two".