144622889 has 16 divisors (see below), whose sum is σ = 156657600. Its totient is φ = 133068096.

The previous prime is 144622883. The next prime is 144622897. The reversal of 144622889 is 988226441.

It is not a de Polignac number, because 144622889 - 2⁸ = 144622633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144622883) 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, 186707 + ... + 187479.

It is an arithmetic number, because the mean of its divisors is an integer number (9791100).

Almost surely, 2^144622889 is an apocalyptic number.

144622889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

144622889 is a deficient number, since it is larger than the sum of its proper divisors (12034711).

144622889 is a wasteful number, since it uses less digits than its factorization.

144622889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064.

The product of its digits is 221184, while the sum is 44.

The square root of 144622889 is about 12025.9257024148. The cubic root of 144622889 is about 524.9029468366.

The spelling of 144622889 in words is "one hundred forty-four million, six hundred twenty-two thousand, eight hundred eighty-nine".