22945989 has 16 divisors (see below), whose sum is σ = 34528320. Its totient is φ = 13426560.

The previous prime is 22945987. The next prime is 22945991. The reversal of 22945989 is 98954922.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22945987) and next prime (22945991).

It is not a de Polignac number, because 22945989 - 2¹ = 22945987 is a prime.

It is a super-2 number, since 2×22945989² = 1053036822376242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22945987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11032 + ... + 12945.

It is an arithmetic number, because the mean of its divisors is an integer number (2158020).

Almost surely, 2^22945989 is an apocalyptic number.

22945989 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

22945989 is a deficient number, since it is larger than the sum of its proper divisors (11582331).

22945989 is a wasteful number, since it uses less digits than its factorization.

22945989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24020.

The product of its digits is 466560, while the sum is 48.

The square root of 22945989 is about 4790.1971775700. The cubic root of 22945989 is about 284.1639146666.

The spelling of 22945989 in words is "twenty-two million, nine hundred forty-five thousand, nine hundred eighty-nine".