461144309 has 2 divisors, whose sum is σ = 461144310. Its totient is φ = 461144308.

The previous prime is 461144303. The next prime is 461144339. The reversal of 461144309 is 903441164.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418202500 + 42941809 = 20450^2 + 6553^2 .

It is a cyclic number.

It is not a de Polignac number, because 461144309 - 2⁸ = 461144053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (461144303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230572154 + 230572155.

It is an arithmetic number, because the mean of its divisors is an integer number (230572155).

Almost surely, 2^461144309 is an apocalyptic number.

It is an amenable number.

461144309 is a deficient number, since it is larger than the sum of its proper divisors (1).

461144309 is an equidigital number, since it uses as much as digits as its factorization.

461144309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 461144309 is about 21474.2708607301. The cubic root of 461144309 is about 772.5838363434.

The spelling of 461144309 in words is "four hundred sixty-one million, one hundred forty-four thousand, three hundred nine".