406842394 has 24 divisors (see below), whose sum is σ = 714178080. Its totient is φ = 173309976.

The previous prime is 406842349. The next prime is 406842413. The reversal of 406842394 is 493248604.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3937 + ... + 28795.

It is an arithmetic number, because the mean of its divisors is an integer number (29757420).

Almost surely, 2^406842394 is an apocalyptic number.

406842394 is a deficient number, since it is larger than the sum of its proper divisors (307335686).

406842394 is a wasteful number, since it uses less digits than its factorization.

406842394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25042 (or 25035 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 406842394 is about 20170.3345039194. The cubic root of 406842394 is about 740.9838350621.

The spelling of 406842394 in words is "four hundred six million, eight hundred forty-two thousand, three hundred ninety-four".