8870491 has 16 divisors (see below), whose sum is σ = 10779840. Its totient is φ = 7136640.

The previous prime is 8870489. The next prime is 8870497. The reversal of 8870491 is 1940788.

8870491 = T₃₄₃ + T₃₄₄ + ... + T₄₅₃.

8870491 = 539² + 540² + ... + 567².

It is not a de Polignac number, because 8870491 - 2¹ = 8870489 is a prime.

It is a super-2 number, since 2×8870491² = 157371221162162, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8870491.

It is not an unprimeable number, because it can be changed into a prime (8870497) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6921 + ... + 8101.

It is an arithmetic number, because the mean of its divisors is an integer number (673740).

Almost surely, 2^8870491 is an apocalyptic number.

8870491 is a deficient number, since it is larger than the sum of its proper divisors (1909349).

8870491 is a wasteful number, since it uses less digits than its factorization.

8870491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 8870491 is about 2978.3369520590. The cubic root of 8870491 is about 207.0058187198.

The spelling of 8870491 in words is "eight million, eight hundred seventy thousand, four hundred ninety-one".