144735391 has 2 divisors, whose sum is σ = 144735392. Its totient is φ = 144735390.

The previous prime is 144735359. The next prime is 144735397. The reversal of 144735391 is 193537441.

144735391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 144735391 - 2⁵ = 144735359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144735391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144735397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72367695 + 72367696.

It is an arithmetic number, because the mean of its divisors is an integer number (72367696).

Almost surely, 2^144735391 is an apocalyptic number.

144735391 is a deficient number, since it is larger than the sum of its proper divisors (1).

144735391 is an equidigital number, since it uses as much as digits as its factorization.

144735391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 144735391 is about 12030.6022708757. The cubic root of 144735391 is about 525.0390187175.

The spelling of 144735391 in words is "one hundred forty-four million, seven hundred thirty-five thousand, three hundred ninety-one".