405104879 has 2 divisors, whose sum is σ = 405104880. Its totient is φ = 405104878.

The previous prime is 405104873. The next prime is 405104899. The reversal of 405104879 is 978401504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405104879 - 2¹⁶ = 405039343 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405104873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202552439 + 202552440.

It is an arithmetic number, because the mean of its divisors is an integer number (202552440).

Almost surely, 2^405104879 is an apocalyptic number.

405104879 is a deficient number, since it is larger than the sum of its proper divisors (1).

405104879 is an equidigital number, since it uses as much as digits as its factorization.

405104879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 405104879 is about 20127.2173685286. The cubic root of 405104879 is about 739.9274819367.

The spelling of 405104879 in words is "four hundred five million, one hundred four thousand, eight hundred seventy-nine".