409427479 has 2 divisors, whose sum is σ = 409427480. Its totient is φ = 409427478.

The previous prime is 409427477. The next prime is 409427489. The reversal of 409427479 is 974724904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 409427479 - 2¹ = 409427477 is a prime.

Together with 409427477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409427477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204713739 + 204713740.

It is an arithmetic number, because the mean of its divisors is an integer number (204713740).

Almost surely, 2^409427479 is an apocalyptic number.

409427479 is a deficient number, since it is larger than the sum of its proper divisors (1).

409427479 is an equidigital number, since it uses as much as digits as its factorization.

409427479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 409427479 is about 20234.3143941177. The cubic root of 409427479 is about 742.5499316072.

The spelling of 409427479 in words is "four hundred nine million, four hundred twenty-seven thousand, four hundred seventy-nine".