144397915 has 8 divisors (see below), whose sum is σ = 183470400. Its totient is φ = 108723072.

The previous prime is 144397909. The next prime is 144397921. The reversal of 144397915 is 519793441.

It is an interprime number because it is at equal distance from previous prime (144397909) and next prime (144397921).

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 144397915 - 2⁹ = 144397403 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 849315 + ... + 849484.

It is an arithmetic number, because the mean of its divisors is an integer number (22933800).

Almost surely, 2^144397915 is an apocalyptic number.

144397915 is a deficient number, since it is larger than the sum of its proper divisors (39072485).

144397915 is a wasteful number, since it uses less digits than its factorization.

144397915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698821.

The product of its digits is 136080, while the sum is 43.

The square root of 144397915 is about 12016.5683537356. The cubic root of 144397915 is about 524.6306275600.

The spelling of 144397915 in words is "one hundred forty-four million, three hundred ninety-seven thousand, nine hundred fifteen".