408460861 has 2 divisors, whose sum is σ = 408460862. Its totient is φ = 408460860.

The previous prime is 408460859. The next prime is 408460873. The reversal of 408460861 is 168064804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 407272761 + 1188100 = 20181^2 + 1090^2 .

It is a cyclic number.

It is not a de Polignac number, because 408460861 - 2¹ = 408460859 is a prime.

It is a super-2 number, since 2×408460861² = 333680549937722642, which contains 22 as substring.

Together with 408460859, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 408460861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408460831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204230430 + 204230431.

It is an arithmetic number, because the mean of its divisors is an integer number (204230431).

Almost surely, 2^408460861 is an apocalyptic number.

It is an amenable number.

408460861 is a deficient number, since it is larger than the sum of its proper divisors (1).

408460861 is an equidigital number, since it uses as much as digits as its factorization.

408460861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 408460861 is about 20210.4146667009. The cubic root of 408460861 is about 741.9651086826.

The spelling of 408460861 in words is "four hundred eight million, four hundred sixty thousand, eight hundred sixty-one".