22139707 has 4 divisors (see below), whose sum is σ = 22156120. Its totient is φ = 22123296.

The previous prime is 22139699. The next prime is 22139737. The reversal of 22139707 is 70793122.

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 22139707 - 2³ = 22139699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22139737) 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, 5982 + ... + 8947.

It is an arithmetic number, because the mean of its divisors is an integer number (5539030).

Almost surely, 2^22139707 is an apocalyptic number.

22139707 is a deficient number, since it is larger than the sum of its proper divisors (16413).

22139707 is a wasteful number, since it uses less digits than its factorization.

22139707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16412.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 22139707 is about 4705.2850073083. The cubic root of 22139707 is about 280.7958100026.

The spelling of 22139707 in words is "twenty-two million, one hundred thirty-nine thousand, seven hundred seven".