9712440 has 192 divisors, whose sum is σ = 35834400. Its totient is φ = 2331648.

The previous prime is 9712421. The next prime is 9712441. The reversal of 9712440 is 442179.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9712441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 422269 + ... + 422291.

Almost surely, 2^9712440 is an apocalyptic number.

9712440 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9712440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17917200).

9712440 is an abundant number, since it is smaller than the sum of its proper divisors (26121960).

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

9712440 is a wasteful number, since it uses less digits than its factorization.

9712440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 9712440 is about 3116.4787822156. The cubic root of 9712440 is about 213.3582544671.

The spelling of 9712440 in words is "nine million, seven hundred twelve thousand, four hundred forty".