461441639 has 2 divisors, whose sum is σ = 461441640. Its totient is φ = 461441638.

The previous prime is 461441627. The next prime is 461441671. The reversal of 461441639 is 936144164.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-461441639 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (461441609) 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 as a sum of consecutive naturals, namely, 230720819 + 230720820.

It is an arithmetic number, because the mean of its divisors is an integer number (230720820).

Almost surely, 2^461441639 is an apocalyptic number.

461441639 is a deficient number, since it is larger than the sum of its proper divisors (1).

461441639 is an equidigital number, since it uses as much as digits as its factorization.

461441639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 38.

The square root of 461441639 is about 21481.1926810408. The cubic root of 461441639 is about 772.7498458370.

The spelling of 461441639 in words is "four hundred sixty-one million, four hundred forty-one thousand, six hundred thirty-nine".