9997470 has 72 divisors (see below), whose sum is σ = 30250584. Its totient is φ = 2284128.

The previous prime is 9997451. The next prime is 9997483. The reversal of 9997470 is 747999.

9997470 is a `hidden beast` number, since 99 + 97 + 470 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3277 + ... + 5543.

It is an arithmetic number, because the mean of its divisors is an integer number (420147).

Almost surely, 2^9997470 is an apocalyptic number.

9997470 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9997470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15125292).

9997470 is an abundant number, since it is smaller than the sum of its proper divisors (20253114).

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

9997470 is a wasteful number, since it uses less digits than its factorization.

9997470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294 (or 2284 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 9997470 is about 3161.8776067394. The cubic root of 9997470 is about 215.4252984048.

The spelling of 9997470 in words is "nine million, nine hundred ninety-seven thousand, four hundred seventy".