394509411 has 6 divisors (see below), whose sum is σ = 569846940. Its totient is φ = 263006268.

The previous prime is 394509397. The next prime is 394509419. The reversal of 394509411 is 114905493.

It is a happy number.

It is not a de Polignac number, because 394509411 - 2²⁷ = 260291683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394509419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21917181 + ... + 21917198.

It is an arithmetic number, because the mean of its divisors is an integer number (94974490).

Almost surely, 2^394509411 is an apocalyptic number.

394509411 is a deficient number, since it is larger than the sum of its proper divisors (175337529).

394509411 is a wasteful number, since it uses less digits than its factorization.

394509411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43834385 (or 43834382 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 394509411 is about 19862.2609740180. The cubic root of 394509411 is about 733.4195054155.

The spelling of 394509411 in words is "three hundred ninety-four million, five hundred nine thousand, four hundred eleven".