7974440 has 64 divisors (see below), whose sum is σ = 19008000. Its totient is φ = 3006720.

The previous prime is 7974437. The next prime is 7974451. The reversal of 7974440 is 444797.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7974440.

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, 73106 + ... + 73214.

It is an arithmetic number, because the mean of its divisors is an integer number (297000).

Almost surely, 2^7974440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7974440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9504000).

7974440 is an abundant number, since it is smaller than the sum of its proper divisors (11033560).

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

7974440 is a wasteful number, since it uses less digits than its factorization.

7974440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 7974440 is about 2823.9050975555. The cubic root of 7974440 is about 199.7867727515.

The spelling of 7974440 in words is "seven million, nine hundred seventy-four thousand, four hundred forty".