144904491 has 32 divisors (see below), whose sum is σ = 220968000. Its totient is φ = 93809664.

The previous prime is 144904483. The next prime is 144904493. The reversal of 144904491 is 194409441.

It is not a de Polignac number, because 144904491 - 2³ = 144904483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144904493) 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 31 ways as a sum of consecutive naturals, for example, 155515 + ... + 156443.

It is an arithmetic number, because the mean of its divisors is an integer number (6905250).

Almost surely, 2^144904491 is an apocalyptic number.

144904491 is a deficient number, since it is larger than the sum of its proper divisors (76063509).

144904491 is a wasteful number, since it uses less digits than its factorization.

144904491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100 (or 1094 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 144904491 is about 12037.6281301592. The cubic root of 144904491 is about 525.2434136556.

It can be divided in two parts, 14490 and 4491, that added together give a palindrome (18981).

The spelling of 144904491 in words is "one hundred forty-four million, nine hundred four thousand, four hundred ninety-one".