144999999 has 12 divisors (see below), whose sum is σ = 214315816. Its totient is φ = 94418352.

The previous prime is 144999991. The next prime is 145000033. The reversal of 144999999 is 999999441.

It is not a de Polignac number, because 144999999 - 2³ = 144999991 is a prime.

It is a Duffinian number.

144999999 is a modest number, since divided by 99999 gives 1449 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144999991) 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 11 ways as a sum of consecutive naturals, for example, 186952 + ... + 187725.

Almost surely, 2^144999999 is an apocalyptic number.

144999999 is a deficient number, since it is larger than the sum of its proper divisors (69315817).

144999999 is a wasteful number, since it uses less digits than its factorization.

144999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374726 (or 374723 counting only the distinct ones).

The product of its digits is 8503056, while the sum is 63.

The square root of 144999999 is about 12041.5945372696. The cubic root of 144999999 is about 525.3587860416.

The spelling of 144999999 in words is "one hundred forty-four million, nine hundred ninety-nine thousand, nine hundred ninety-nine".