22950989 has 4 divisors (see below), whose sum is σ = 23571324. Its totient is φ = 22330656.

The previous prime is 22950979. The next prime is 22951007. The reversal of 22950989 is 98905922.

22950989 = 520² + 521² + ... + 593².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98905922 = 2 ⋅49452961.

It can be written as a sum of positive squares in 2 ways, for example, as 20775364 + 2175625 = 4558^2 + 1475^2 .

It is a cyclic number.

It is not a de Polignac number, because 22950989 - 2⁴ = 22950973 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 (22950929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310112 + ... + 310185.

It is an arithmetic number, because the mean of its divisors is an integer number (5892831).

Almost surely, 2^22950989 is an apocalyptic number.

It is an amenable number.

22950989 is a deficient number, since it is larger than the sum of its proper divisors (620335).

22950989 is an equidigital number, since it uses as much as digits as its factorization.

22950989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620334.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 22950989 is about 4790.7190483267. The cubic root of 22950989 is about 284.1845532247.

The spelling of 22950989 in words is "twenty-two million, nine hundred fifty thousand, nine hundred eighty-nine".