7989958 has 8 divisors (see below), whose sum is σ = 11999952. Its totient is φ = 3989976.

The previous prime is 7989929. The next prime is 7989973. The reversal of 7989958 is 8599897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 7989899 and 7989908.

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, 10 + ... + 3997.

It is an arithmetic number, because the mean of its divisors is an integer number (1499994).

Almost surely, 2^7989958 is an apocalyptic number.

7989958 is a deficient number, since it is larger than the sum of its proper divisors (4009994).

7989958 is a wasteful number, since it uses less digits than its factorization.

7989958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006.

The product of its digits is 1632960, while the sum is 55.

The square root of 7989958 is about 2826.6513757448. The cubic root of 7989958 is about 199.9162816277.

The spelling of 7989958 in words is "seven million, nine hundred eighty-nine thousand, nine hundred fifty-eight".