22489509 has 16 divisors (see below), whose sum is σ = 34524288. Its totient is φ = 12755712.

The previous prime is 22489507. The next prime is 22489513. The reversal of 22489509 is 90598422.

It is not a de Polignac number, because 22489509 - 2¹ = 22489507 is a prime.

It is a super-2 number, since 2×22489509² = 1011556030122162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22489507) 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 15 ways as a sum of consecutive naturals, for example, 1032 + ... + 6785.

It is an arithmetic number, because the mean of its divisors is an integer number (2157768).

Almost surely, 2^22489509 is an apocalyptic number.

It is an amenable number.

22489509 is a deficient number, since it is larger than the sum of its proper divisors (12034779).

22489509 is a wasteful number, since it uses less digits than its factorization.

22489509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7964.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 22489509 is about 4742.3105128197. The cubic root of 22489509 is about 282.2669244698.

The spelling of 22489509 in words is "twenty-two million, four hundred eighty-nine thousand, five hundred nine".