22639139 has 2 divisors, whose sum is σ = 22639140. Its totient is φ = 22639138.

The previous prime is 22639103. The next prime is 22639157. The reversal of 22639139 is 93193622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22639139 - 2¹² = 22635043 is a prime.

It is a super-2 number, since 2×22639139² = 1025061229322642, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22639099 and 22639108.

It is not a weakly prime, because it can be changed into another prime (22639159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11319569 + 11319570.

It is an arithmetic number, because the mean of its divisors is an integer number (11319570).

Almost surely, 2^22639139 is an apocalyptic number.

22639139 is a deficient number, since it is larger than the sum of its proper divisors (1).

22639139 is an equidigital number, since it uses as much as digits as its factorization.

22639139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 35.

The square root of 22639139 is about 4758.0604241645. The cubic root of 22639139 is about 282.8915457181.

The spelling of 22639139 in words is "twenty-two million, six hundred thirty-nine thousand, one hundred thirty-nine".