408913 has 2 divisors, whose sum is σ = 408914. Its totient is φ = 408912.

The previous prime is 408911. The next prime is 408923. The reversal of 408913 is 319804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380689 + 28224 = 617^2 + 168^2 .

It is a cyclic number.

It is not a de Polignac number, because 408913 - 2¹ = 408911 is a prime.

Together with 408911, it forms a pair of twin primes.

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

It is not a weakly prime, because it can be changed into another prime (408911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204456 + 204457.

It is an arithmetic number, because the mean of its divisors is an integer number (204457).

2⁴⁰⁸⁹¹³ is an apocalyptic number.

It is an amenable number.

408913 is a deficient number, since it is larger than the sum of its proper divisors (1).

408913 is an equidigital number, since it uses as much as digits as its factorization.

408913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 408913 is about 639.4630560087. The cubic root of 408913 is about 74.2238776402.

The spelling of 408913 in words is "four hundred eight thousand, nine hundred thirteen".