855938394 has 16 divisors (see below), whose sum is σ = 1902085440. Its totient is φ = 285312780.

The previous prime is 855938381. The next prime is 855938401. The reversal of 855938394 is 493839558.

855938394 is a `hidden beast` number, since 8 + 559 + 3 + 83 + 9 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 15850711 = 855938394 / (8 + 5 + 5 + 9 + 3 + 8 + 3 + 9 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 855938394.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7925302 + ... + 7925409.

It is an arithmetic number, because the mean of its divisors is an integer number (118880340).

Almost surely, 2^855938394 is an apocalyptic number.

855938394 is an abundant number, since it is smaller than the sum of its proper divisors (1046147046).

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

855938394 is a wasteful number, since it uses less digits than its factorization.

855938394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15850722 (or 15850716 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 855938394 is about 29256.4248328465. The cubic root of 855938394 is about 949.4691009663.

The spelling of 855938394 in words is "eight hundred fifty-five million, nine hundred thirty-eight thousand, three hundred ninety-four".