144990399 has 8 divisors (see below), whose sum is σ = 204692400. Its totient is φ = 90974336.

The previous prime is 144990389. The next prime is 144990403. The reversal of 144990399 is 993099441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144990399 - 2⁷ = 144990271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144990389) 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 7 ways as a sum of consecutive naturals, for example, 1421424 + ... + 1421525.

It is an arithmetic number, because the mean of its divisors is an integer number (25586550).

Almost surely, 2^144990399 is an apocalyptic number.

144990399 is a deficient number, since it is larger than the sum of its proper divisors (59702001).

144990399 is a wasteful number, since it uses less digits than its factorization.

144990399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842969.

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 144990399 is about 12041.1959123668. The cubic root of 144990399 is about 525.3471916607.

The spelling of 144990399 in words is "one hundred forty-four million, nine hundred ninety thousand, three hundred ninety-nine".