7988994 has 24 divisors (see below), whose sum is σ = 18641532. Its totient is φ = 2458080.

The previous prime is 7988993. The next prime is 7989011. The reversal of 7988994 is 4998897.

7988994 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7700625 + 288369 = 2775^2 + 537^2 .

It is a d-powerful number, because it can be written as 7 + 9³ + 8³ + 8⁷ + 9⁵ + 9⁷ + 4¹⁰ .

It is a self number, because there is not a number n which added to its sum of digits gives 7988994.

It is not an unprimeable number, because it can be changed into a prime (7988993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16837 + ... + 17304.

Almost surely, 2^7988994 is an apocalyptic number.

7988994 is an abundant number, since it is smaller than the sum of its proper divisors (10652538).

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

7988994 is a wasteful number, since it uses less digits than its factorization.

7988994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34162 (or 34159 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 7988994 is about 2826.4808508108. The cubic root of 7988994 is about 199.9082412414.

The spelling of 7988994 in words is "seven million, nine hundred eighty-eight thousand, nine hundred ninety-four".