7985990 has 8 divisors (see below), whose sum is σ = 14374800. Its totient is φ = 3194392.

The previous prime is 7985983. The next prime is 7986001. The reversal of 7985990 is 995897.

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

It is a Curzon number.

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, 399290 + ... + 399309.

It is an arithmetic number, because the mean of its divisors is an integer number (1796850).

Almost surely, 2^7985990 is an apocalyptic number.

7985990 is a deficient number, since it is larger than the sum of its proper divisors (6388810).

7985990 is a wasteful number, since it uses less digits than its factorization.

7985990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798606.

The product of its (nonzero) digits is 204120, while the sum is 47.

The square root of 7985990 is about 2825.9493979900. The cubic root of 7985990 is about 199.8831817808.

The spelling of 7985990 in words is "seven million, nine hundred eighty-five thousand, nine hundred ninety".