402422394 has 32 divisors (see below), whose sum is σ = 924226560. Its totient is φ = 115527600.

The previous prime is 402422389. The next prime is 402422401. The reversal of 402422394 is 493224204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159202 + ... + 161709.

It is an arithmetic number, because the mean of its divisors is an integer number (28882080).

Almost surely, 2^402422394 is an apocalyptic number.

402422394 is an abundant number, since it is smaller than the sum of its proper divisors (521804166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402422394 is a wasteful number, since it uses less digits than its factorization.

402422394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320946.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 402422394 is about 20060.4684391965. The cubic root of 402422394 is about 738.2906699402.

Adding to 402422394 its reverse (493224204), we get a palindrome (895646598).

The spelling of 402422394 in words is "four hundred two million, four hundred twenty-two thousand, three hundred ninety-four".