439745461 has 2 divisors, whose sum is σ = 439745462. Its totient is φ = 439745460.

The previous prime is 439745431. The next prime is 439745483. The reversal of 439745461 is 164547934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 436559236 + 3186225 = 20894^2 + 1785^2 .

It is a cyclic number.

It is not a de Polignac number, because 439745461 - 2¹³ = 439737269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (439745431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219872730 + 219872731.

It is an arithmetic number, because the mean of its divisors is an integer number (219872731).

Almost surely, 2^439745461 is an apocalyptic number.

It is an amenable number.

439745461 is a deficient number, since it is larger than the sum of its proper divisors (1).

439745461 is an equidigital number, since it uses as much as digits as its factorization.

439745461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 43.

The square root of 439745461 is about 20970.1087503141. The cubic root of 439745461 is about 760.4437972374.

The spelling of 439745461 in words is "four hundred thirty-nine million, seven hundred forty-five thousand, four hundred sixty-one".