2172894249 has 32 divisors (see below), whose sum is σ = 3058818048. Its totient is φ = 1369368000.

The previous prime is 2172894233. The next prime is 2172894277. The reversal of 2172894249 is 9424982712.

It is a happy number.

It is not a de Polignac number, because 2172894249 - 2⁴ = 2172894233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2172894198 and 2172894207.

It is not an unprimeable number, because it can be changed into a prime (2172894299) 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 31 ways as a sum of consecutive naturals, for example, 3805134 + ... + 3805704.

It is an arithmetic number, because the mean of its divisors is an integer number (95588064).

Almost surely, 2^2172894249 is an apocalyptic number.

It is an amenable number.

2172894249 is a deficient number, since it is larger than the sum of its proper divisors (885923799).

2172894249 is a wasteful number, since it uses less digits than its factorization.

2172894249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149.

The product of its digits is 580608, while the sum is 48.

The square root of 2172894249 is about 46614.3137780661. The cubic root of 2172894249 is about 1295.2279179252.

The spelling of 2172894249 in words is "two billion, one hundred seventy-two million, eight hundred ninety-four thousand, two hundred forty-nine".