408479129 has 2 divisors, whose sum is σ = 408479130. Its totient is φ = 408479128.

The previous prime is 408479083. The next prime is 408479143. The reversal of 408479129 is 921974804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401080729 + 7398400 = 20027^2 + 2720^2 .

It is a cyclic number.

It is not a de Polignac number, because 408479129 - 2²⁰ = 407430553 is a prime.

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 408479129.

It is not a weakly prime, because it can be changed into another prime (408479189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204239564 + 204239565.

It is an arithmetic number, because the mean of its divisors is an integer number (204239565).

Almost surely, 2^408479129 is an apocalyptic number.

It is an amenable number.

408479129 is a deficient number, since it is larger than the sum of its proper divisors (1).

408479129 is an equidigital number, since it uses as much as digits as its factorization.

408479129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 408479129 is about 20210.8666068529. The cubic root of 408479129 is about 741.9761697313.

The spelling of 408479129 in words is "four hundred eight million, four hundred seventy-nine thousand, one hundred twenty-nine".