144572399 has 4 divisors (see below), whose sum is σ = 146730264. Its totient is φ = 142414536.

The previous prime is 144572381. The next prime is 144572413. The reversal of 144572399 is 993275441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993275441 = 97 ⋅10239953.

It is a cyclic number.

It is not a de Polignac number, because 144572399 - 2⁸ = 144572143 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 (144572599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078832 + ... + 1078965.

It is an arithmetic number, because the mean of its divisors is an integer number (36682566).

Almost surely, 2^144572399 is an apocalyptic number.

144572399 is a deficient number, since it is larger than the sum of its proper divisors (2157865).

144572399 is an equidigital number, since it uses as much as digits as its factorization.

144572399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157864.

The product of its digits is 272160, while the sum is 44.

The square root of 144572399 is about 12023.8263044673. The cubic root of 144572399 is about 524.8418559201.

The spelling of 144572399 in words is "one hundred forty-four million, five hundred seventy-two thousand, three hundred ninety-nine".