409970879 has 2 divisors, whose sum is σ = 409970880. Its totient is φ = 409970878.

The previous prime is 409970867. The next prime is 409970933. The reversal of 409970879 is 978079904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 409970879 - 2⁴ = 409970863 is a prime.

It is a super-2 number, since 2×409970879² = 336152243256065282, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 409970879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409970819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204985439 + 204985440.

It is an arithmetic number, because the mean of its divisors is an integer number (204985440).

Almost surely, 2^409970879 is an apocalyptic number.

409970879 is a deficient number, since it is larger than the sum of its proper divisors (1).

409970879 is an equidigital number, since it uses as much as digits as its factorization.

409970879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 409970879 is about 20247.7376267078. The cubic root of 409970879 is about 742.8782952152.

The spelling of 409970879 in words is "four hundred nine million, nine hundred seventy thousand, eight hundred seventy-nine".