891396146 has 8 divisors (see below), whose sum is σ = 1340680044. Its totient is φ = 444502800.

The previous prime is 891396137. The next prime is 891396161. The reversal of 891396146 is 641693198.

It can be written as a sum of positive squares in 2 ways, for example, as 890365921 + 1030225 = 29839^2 + 1015^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 891396146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596705 + ... + 598196.

Almost surely, 2^891396146 is an apocalyptic number.

891396146 is a deficient number, since it is larger than the sum of its proper divisors (449283898).

891396146 is a wasteful number, since it uses less digits than its factorization.

891396146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195276.

The product of its digits is 279936, while the sum is 47.

The square root of 891396146 is about 29856.2580709639. The cubic root of 891396146 is about 962.4028875091.

The spelling of 891396146 in words is "eight hundred ninety-one million, three hundred ninety-six thousand, one hundred forty-six".