891339394 has 16 divisors (see below), whose sum is σ = 1459386720. Its totient is φ = 404923360.

The previous prime is 891339377. The next prime is 891339409. The reversal of 891339394 is 493933198.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31497 + ... + 52675.

It is an arithmetic number, because the mean of its divisors is an integer number (91211670).

Almost surely, 2^891339394 is an apocalyptic number.

891339394 is a deficient number, since it is larger than the sum of its proper divisors (568047326).

891339394 is a wasteful number, since it uses less digits than its factorization.

891339394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23105.

The product of its digits is 629856, while the sum is 49.

The square root of 891339394 is about 29855.3076353268. The cubic root of 891339394 is about 962.3824628273.

The spelling of 891339394 in words is "eight hundred ninety-one million, three hundred thirty-nine thousand, three hundred ninety-four".