22890839 has 4 divisors (see below), whose sum is σ = 24095640. Its totient is φ = 21686040.

The previous prime is 22890821. The next prime is 22890851. The reversal of 22890839 is 93809822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93809822 = 2 ⋅46904911.

It is a cyclic number.

It is not a de Polignac number, because 22890839 - 2²⁴ = 6113623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22890796 and 22890805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22892839) 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, 602372 + ... + 602409.

It is an arithmetic number, because the mean of its divisors is an integer number (6023910).

Almost surely, 2^22890839 is an apocalyptic number.

22890839 is a deficient number, since it is larger than the sum of its proper divisors (1204801).

22890839 is a wasteful number, since it uses less digits than its factorization.

22890839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204800.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 22890839 is about 4784.4371664805. The cubic root of 22890839 is about 283.9360722010.

The spelling of 22890839 in words is "twenty-two million, eight hundred ninety thousand, eight hundred thirty-nine".