8491470 has 32 divisors (see below), whose sum is σ = 21948192. Its totient is φ = 2090112.

The previous prime is 8491453. The next prime is 8491471. The reversal of 8491470 is 741948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8491471) 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, 10497 + ... + 11276.

It is an arithmetic number, because the mean of its divisors is an integer number (685881).

Almost surely, 2^8491470 is an apocalyptic number.

8491470 is an abundant number, since it is smaller than the sum of its proper divisors (13456722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8491470 is a wasteful number, since it uses less digits than its factorization.

8491470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21796.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 8491470 is about 2914.0126972956. The cubic root of 8491470 is about 204.0144645645.

The spelling of 8491470 in words is "eight million, four hundred ninety-one thousand, four hundred seventy".