144901439 has 4 divisors (see below), whose sum is σ = 146230920. Its totient is φ = 143571960.

The previous prime is 144901411. The next prime is 144901441. The reversal of 144901439 is 934109441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934109441 = 71 ⋅13156471.

It is a cyclic number.

It is not a de Polignac number, because 144901439 - 2¹² = 144897343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144901399 and 144901408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144901469) 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 3 ways as a sum of consecutive naturals, for example, 664577 + ... + 664794.

It is an arithmetic number, because the mean of its divisors is an integer number (36557730).

Almost surely, 2^144901439 is an apocalyptic number.

144901439 is a deficient number, since it is larger than the sum of its proper divisors (1329481).

144901439 is a wasteful number, since it uses less digits than its factorization.

144901439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329480.

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

The square root of 144901439 is about 12037.5013603322. The cubic root of 144901439 is about 525.2397260447.

The spelling of 144901439 in words is "one hundred forty-four million, nine hundred one thousand, four hundred thirty-nine".