8491440958 has 48 divisors (see below), whose sum is σ = 17231245920. Its totient is φ = 3053856960.

The previous prime is 8491440943. The next prime is 8491440967. The reversal of 8491440958 is 8590441948.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170773 + ... + 214816.

It is an arithmetic number, because the mean of its divisors is an integer number (358984290).

Almost surely, 2^8491440958 is an apocalyptic number.

8491440958 is an abundant number, since it is smaller than the sum of its proper divisors (8739804962).

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

8491440958 is a wasteful number, since it uses less digits than its factorization.

8491440958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385633 (or 385622 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 52.

The square root of 8491440958 is about 92149.0149594666. The cubic root of 8491440958 is about 2040.1423197838.

The spelling of 8491440958 in words is "eight billion, four hundred ninety-one million, four hundred forty thousand, nine hundred fifty-eight".