22138959 has 8 divisors (see below), whose sum is σ = 29540992. Its totient is φ = 14748120.

The previous prime is 22138957. The next prime is 22138973. The reversal of 22138959 is 95983122.

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

It is not a de Polignac number, because 22138959 - 2¹ = 22138957 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 (22138957) 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, 4662 + ... + 8124.

It is an arithmetic number, because the mean of its divisors is an integer number (3692624).

Almost surely, 2^22138959 is an apocalyptic number.

22138959 is a deficient number, since it is larger than the sum of its proper divisors (7402033).

22138959 is a wasteful number, since it uses less digits than its factorization.

22138959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5597.

The product of its digits is 38880, while the sum is 39.

The square root of 22138959 is about 4705.2055215474. The cubic root of 22138959 is about 280.7926476959.

The spelling of 22138959 in words is "twenty-two million, one hundred thirty-eight thousand, nine hundred fifty-nine".