7989930 has 48 divisors (see below), whose sum is σ = 22375080. Its totient is φ = 1966464.

The previous prime is 7989929. The next prime is 7989973. The reversal of 7989930 is 399897.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5157441 + 2832489 = 2271^2 + 1683^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2245 + ... + 4584.

Almost surely, 2^7989930 is an apocalyptic number.

7989930 is an abundant number, since it is smaller than the sum of its proper divisors (14385150).

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

7989930 is a wasteful number, since it uses less digits than its factorization.

7989930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6855 (or 6852 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 7989930 is about 2826.6464228835. The cubic root of 7989930 is about 199.9160480987.

It can be divided in two parts, 79 and 89930, that added together give a palindrome (90009).

The spelling of 7989930 in words is "seven million, nine hundred eighty-nine thousand, nine hundred thirty".