439898413 has 2 divisors, whose sum is σ = 439898414. Its totient is φ = 439898412.

The previous prime is 439898383. The next prime is 439898447. The reversal of 439898413 is 314898934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 439866729 + 31684 = 20973^2 + 178^2 .

It is a cyclic number.

It is not a de Polignac number, because 439898413 - 2¹³ = 439890221 is a prime.

It is a super-2 number, since 2×439898413² = 387021227519837138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (439898113) 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, 219949206 + 219949207.

It is an arithmetic number, because the mean of its divisors is an integer number (219949207).

Almost surely, 2^439898413 is an apocalyptic number.

It is an amenable number.

439898413 is a deficient number, since it is larger than the sum of its proper divisors (1).

439898413 is an equidigital number, since it uses as much as digits as its factorization.

439898413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 49.

The square root of 439898413 is about 20973.7553385177. The cubic root of 439898413 is about 760.5319527178.

The spelling of 439898413 in words is "four hundred thirty-nine million, eight hundred ninety-eight thousand, four hundred thirteen".