144899997 has 8 divisors (see below), whose sum is σ = 210763680. Its totient is φ = 87818160.

The previous prime is 144899971. The next prime is 144900011. The reversal of 144899997 is 799998441.

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

It is not a de Polignac number, because 144899997 - 2⁷ = 144899869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144899997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144899917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2195422 + ... + 2195487.

It is an arithmetic number, because the mean of its divisors is an integer number (26345460).

Almost surely, 2^144899997 is an apocalyptic number.

It is an amenable number.

144899997 is a deficient number, since it is larger than the sum of its proper divisors (65863683).

144899997 is a wasteful number, since it uses less digits than its factorization.

144899997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4390923.

The product of its digits is 5878656, while the sum is 60.

The square root of 144899997 is about 12037.4414640321. The cubic root of 144899997 is about 525.2379837151.

The spelling of 144899997 in words is "one hundred forty-four million, eight hundred ninety-nine thousand, nine hundred ninety-seven".