9971478 has 32 divisors (see below), whose sum is σ = 24174720. Its totient is φ = 3021480.

The previous prime is 9971461. The next prime is 9971483. The reversal of 9971478 is 8741799.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7800 + ... + 8987.

It is an arithmetic number, because the mean of its divisors is an integer number (755460).

Almost surely, 2^9971478 is an apocalyptic number.

9971478 is an abundant number, since it is smaller than the sum of its proper divisors (14203242).

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

9971478 is a wasteful number, since it uses less digits than its factorization.

9971478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16809 (or 16803 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 9971478 is about 3157.7647157444. The cubic root of 9971478 is about 215.2384446686.

The spelling of 9971478 in words is "nine million, nine hundred seventy-one thousand, four hundred seventy-eight".