995990 has 16 divisors (see below), whose sum is σ = 1808352. Its totient is φ = 394944.

The previous prime is 995989. The next prime is 996001. The reversal of 995990 is 99599.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1007 + ... + 1733.

It is an arithmetic number, because the mean of its divisors is an integer number (113022).

2⁹⁹⁵⁹⁹⁰ is an apocalyptic number.

995990 is a deficient number, since it is larger than the sum of its proper divisors (812362).

995990 is a wasteful number, since it uses less digits than its factorization.

995990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871.

The product of its (nonzero) digits is 32805, while the sum is 41.

The square root of 995990 is about 997.9929859473. The cubic root of 995990 is about 99.8661542665.

The spelling of 995990 in words is "nine hundred ninety-five thousand, nine hundred ninety".