2399172 has 12 divisors (see below), whose sum is σ = 5598096. Its totient is φ = 799720.

The previous prime is 2399171. The next prime is 2399207. The reversal of 2399172 is 2719932.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2399171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99954 + ... + 99977.

It is an arithmetic number, because the mean of its divisors is an integer number (466508).

2^2399172 is an apocalyptic number.

It is an amenable number.

2399172 is an abundant number, since it is smaller than the sum of its proper divisors (3198924).

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

2399172 is a wasteful number, since it uses less digits than its factorization.

2399172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199938 (or 199936 counting only the distinct ones).

The product of its digits is 6804, while the sum is 33.

The square root of 2399172 is about 1548.9260795790. The cubic root of 2399172 is about 133.8711912876.

The spelling of 2399172 in words is "two million, three hundred ninety-nine thousand, one hundred seventy-two".