8851491 has 16 divisors (see below), whose sum is σ = 14305920. Its totient is φ = 5364360.

The previous prime is 8851489. The next prime is 8851517. The reversal of 8851491 is 1941588.

It is not a de Polignac number, because 8851491 - 2¹ = 8851489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8851471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14605 + ... + 15198.

It is an arithmetic number, because the mean of its divisors is an integer number (894120).

Almost surely, 2^8851491 is an apocalyptic number.

8851491 is a deficient number, since it is larger than the sum of its proper divisors (5454429).

8851491 is a wasteful number, since it uses less digits than its factorization.

8851491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29823 (or 29817 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 8851491 is about 2975.1455426584. The cubic root of 8851491 is about 206.8579155182.

Subtracting from 8851491 its reverse (1941588), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 8851491 in words is "eight million, eight hundred fifty-one thousand, four hundred ninety-one".