22370399 has 4 divisors (see below), whose sum is σ = 22792536. Its totient is φ = 21948264.

The previous prime is 22370377. The next prime is 22370401. The reversal of 22370399 is 99307322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22370399 - 2⁸ = 22370143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22370599) 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, 210989 + ... + 211094.

It is an arithmetic number, because the mean of its divisors is an integer number (5698134).

Almost surely, 2^22370399 is an apocalyptic number.

22370399 is a deficient number, since it is larger than the sum of its proper divisors (422137).

22370399 is an equidigital number, since it uses as much as digits as its factorization.

22370399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422136.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 22370399 is about 4729.7356162898. The cubic root of 22370399 is about 281.7677236595.

The spelling of 22370399 in words is "twenty-two million, three hundred seventy thousand, three hundred ninety-nine".