144374609 has 2 divisors, whose sum is σ = 144374610. Its totient is φ = 144374608.

The previous prime is 144374579. The next prime is 144374621. The reversal of 144374609 is 906473441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126337600 + 18037009 = 11240^2 + 4247^2 .

It is an emirp because it is prime and its reverse (906473441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144374609 is a prime.

It is not a weakly prime, because it can be changed into another prime (144374689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72187304 + 72187305.

It is an arithmetic number, because the mean of its divisors is an integer number (72187305).

Almost surely, 2^144374609 is an apocalyptic number.

It is an amenable number.

144374609 is a deficient number, since it is larger than the sum of its proper divisors (1).

144374609 is an equidigital number, since it uses as much as digits as its factorization.

144374609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 144374609 is about 12015.5985701920. The cubic root of 144374609 is about 524.6024006998.

The spelling of 144374609 in words is "one hundred forty-four million, three hundred seventy-four thousand, six hundred nine".