8997478 has 12 divisors (see below), whose sum is σ = 15699852. Its totient is φ = 3856020.

The previous prime is 8997463. The next prime is 8997487. The reversal of 8997478 is 8747998.

It is a happy number.

It is a super-2 number, since 2×8997478² = 161909220720968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45808 + ... + 46003.

It is an arithmetic number, because the mean of its divisors is an integer number (1308321).

Almost surely, 2^8997478 is an apocalyptic number.

8997478 is a deficient number, since it is larger than the sum of its proper divisors (6702374).

8997478 is a wasteful number, since it uses less digits than its factorization.

8997478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91827 (or 91820 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 52.

The square root of 8997478 is about 2999.5796372159. The cubic root of 8997478 is about 207.9889509663.

The spelling of 8997478 in words is "eight million, nine hundred ninety-seven thousand, four hundred seventy-eight".