12172797 has 48 divisors (see below), whose sum is σ = 22014720. Its totient is φ = 6310656.

The previous prime is 12172789. The next prime is 12172807. The reversal of 12172797 is 79727121.

It is not a de Polignac number, because 12172797 - 2³ = 12172789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12172717) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 72808 + ... + 72974.

It is an arithmetic number, because the mean of its divisors is an integer number (458640).

Almost surely, 2^12172797 is an apocalyptic number.

It is an amenable number.

12172797 is a deficient number, since it is larger than the sum of its proper divisors (9841923).

12172797 is a wasteful number, since it uses less digits than its factorization.

12172797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 279 counting only the distinct ones).

The product of its digits is 12348, while the sum is 36.

The square root of 12172797 is about 3488.9535680487. The cubic root of 12172797 is about 230.0365222406.

The spelling of 12172797 in words is "twelve million, one hundred seventy-two thousand, seven hundred ninety-seven".