891899396 has 12 divisors (see below), whose sum is σ = 1561095900. Its totient is φ = 445872000.

The previous prime is 891899389. The next prime is 891899443. The reversal of 891899396 is 693998198.

It can be written as a sum of positive squares in 2 ways, for example, as 412902400 + 478996996 = 20320^2 + 21886^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12080 + ... + 43928.

It is an arithmetic number, because the mean of its divisors is an integer number (130091325).

Almost surely, 2^891899396 is an apocalyptic number.

It is an amenable number.

891899396 is a deficient number, since it is larger than the sum of its proper divisors (669196504).

891899396 is a wasteful number, since it uses less digits than its factorization.

891899396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38854 (or 38852 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 62.

The square root of 891899396 is about 29864.6847631111. The cubic root of 891899396 is about 962.5839660486.

The spelling of 891899396 in words is "eight hundred ninety-one million, eight hundred ninety-nine thousand, three hundred ninety-six".