7953940 has 12 divisors (see below), whose sum is σ = 16703316. Its totient is φ = 3181568.

The previous prime is 7953931. The next prime is 7953971. The reversal of 7953940 is 493597.

It can be written as a sum of positive squares in 2 ways, for example, as 2365444 + 5588496 = 1538^2 + 2364^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7953940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198829 + ... + 198868.

It is an arithmetic number, because the mean of its divisors is an integer number (1391943).

Almost surely, 2^7953940 is an apocalyptic number.

It is an amenable number.

7953940 is an abundant number, since it is smaller than the sum of its proper divisors (8749376).

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

7953940 is a wasteful number, since it uses less digits than its factorization.

7953940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397706 (or 397704 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 7953940 is about 2820.2730364275. The cubic root of 7953940 is about 199.6154276612.

The spelling of 7953940 in words is "seven million, nine hundred fifty-three thousand, nine hundred forty".