144292391 has 8 divisors (see below), whose sum is σ = 149086080. Its totient is φ = 139564152.

The previous prime is 144292367. The next prime is 144292399. The reversal of 144292391 is 193292441.

144292391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 144292391 - 2²² = 140098087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144292399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11861 + ... + 20718.

It is an arithmetic number, because the mean of its divisors is an integer number (18635760).

Almost surely, 2^144292391 is an apocalyptic number.

144292391 is a deficient number, since it is larger than the sum of its proper divisors (4793689).

144292391 is a wasteful number, since it uses less digits than its factorization.

144292391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32725.

The product of its digits is 15552, while the sum is 35.

The square root of 144292391 is about 12012.1767802509. The cubic root of 144292391 is about 524.5027988132.

Subtracting 144292391 from its reverse (193292441), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 144292391 in words is "one hundred forty-four million, two hundred ninety-two thousand, three hundred ninety-one".