22038999 has 4 divisors (see below), whose sum is σ = 29385336. Its totient is φ = 14692664.

The previous prime is 22038979. The next prime is 22039019. The reversal of 22038999 is 99983022.

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

It is an interprime number because it is at equal distance from previous prime (22038979) and next prime (22039019).

It is a cyclic number.

It is not a de Polignac number, because 22038999 - 2⁵ = 22038967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22038999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22038949) 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, 3673164 + ... + 3673169.

It is an arithmetic number, because the mean of its divisors is an integer number (7346334).

Almost surely, 2^22038999 is an apocalyptic number.

22038999 is a deficient number, since it is larger than the sum of its proper divisors (7346337).

22038999 is an equidigital number, since it uses as much as digits as its factorization.

22038999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7346336.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 22038999 is about 4694.5712264274. The cubic root of 22038999 is about 280.3694061328.

The spelling of 22038999 in words is "twenty-two million, thirty-eight thousand, nine hundred ninety-nine".