7940988 has 54 divisors (see below), whose sum is σ = 22075872. Its totient is φ = 2405040.

The previous prime is 7940981. The next prime is 7941007. The reversal of 7940988 is 8890497.

7940988 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×7940988² = 126118580832288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7940981) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3445 + ... + 5267.

Almost surely, 2^7940988 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 7940988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11037936).

7940988 is an abundant number, since it is smaller than the sum of its proper divisors (14134884).

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

7940988 is a wasteful number, since it uses less digits than its factorization.

7940988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855 (or 1839 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 7940988 is about 2817.9758693076. The cubic root of 7940988 is about 199.5070191813.

It can be divided in two parts, 79409 and 88, that added together give a palindrome (79497).

The spelling of 7940988 in words is "seven million, nine hundred forty thousand, nine hundred eighty-eight".