22399197 has 8 divisors (see below), whose sum is σ = 29953056. Its totient is φ = 14889072.

The previous prime is 22399187. The next prime is 22399211. The reversal of 22399197 is 79199322.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22399197 - 2¹⁴ = 22382813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22399147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9718 + ... + 11799.

It is an arithmetic number, because the mean of its divisors is an integer number (3744132).

Almost surely, 2^22399197 is an apocalyptic number.

It is an amenable number.

22399197 is a deficient number, since it is larger than the sum of its proper divisors (7553859).

22399197 is a wasteful number, since it uses less digits than its factorization.

22399197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21867.

The product of its digits is 61236, while the sum is 42.

The square root of 22399197 is about 4732.7789933611. The cubic root of 22399197 is about 281.8885808013. Note that the first 3 decimals are identical.

The spelling of 22399197 in words is "twenty-two million, three hundred ninety-nine thousand, one hundred ninety-seven".