409630399 has 2 divisors, whose sum is σ = 409630400. Its totient is φ = 409630398.

The previous prime is 409630387. The next prime is 409630439. The reversal of 409630399 is 993036904.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 409630399 - 2⁷ = 409630271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409630369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204815199 + 204815200.

It is an arithmetic number, because the mean of its divisors is an integer number (204815200).

Almost surely, 2^409630399 is an apocalyptic number.

409630399 is a deficient number, since it is larger than the sum of its proper divisors (1).

409630399 is an equidigital number, since it uses as much as digits as its factorization.

409630399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 43.

The square root of 409630399 is about 20239.3280273827. The cubic root of 409630399 is about 742.6725852750.

The spelling of 409630399 in words is "four hundred nine million, six hundred thirty thousand, three hundred ninety-nine".