22957439 has 4 divisors (see below), whose sum is σ = 22970256. Its totient is φ = 22944624.

The previous prime is 22957421. The next prime is 22957447. The reversal of 22957439 is 93475922.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22957439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22957396 and 22957405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22957469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3179 + ... + 7484.

It is an arithmetic number, because the mean of its divisors is an integer number (5742564).

Almost surely, 2^22957439 is an apocalyptic number.

22957439 is a deficient number, since it is larger than the sum of its proper divisors (12817).

22957439 is a wasteful number, since it uses less digits than its factorization.

22957439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12816.

The product of its digits is 136080, while the sum is 41.

The square root of 22957439 is about 4791.3921776452. The cubic root of 22957439 is about 284.2111725378.

The spelling of 22957439 in words is "twenty-two million, nine hundred fifty-seven thousand, four hundred thirty-nine".