405115379 has 2 divisors, whose sum is σ = 405115380. Its totient is φ = 405115378.

The previous prime is 405115369. The next prime is 405115387. The reversal of 405115379 is 973511504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 405115379 - 2²⁸ = 136679923 is a prime.

It is not a weakly prime, because it can be changed into another prime (405115309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202557689 + 202557690.

It is an arithmetic number, because the mean of its divisors is an integer number (202557690).

Almost surely, 2^405115379 is an apocalyptic number.

405115379 is a deficient number, since it is larger than the sum of its proper divisors (1).

405115379 is an equidigital number, since it uses as much as digits as its factorization.

405115379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 405115379 is about 20127.4782076643. The cubic root of 405115379 is about 739.9338746611.

The spelling of 405115379 in words is "four hundred five million, one hundred fifteen thousand, three hundred seventy-nine".