994990 has 32 divisors (see below), whose sum is σ = 1918080. Its totient is φ = 370944.

The previous prime is 994963. The next prime is 994991. The reversal of 994990 is 99499.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994991) by changing a digit.

994990 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13594 + ... + 13666.

It is an arithmetic number, because the mean of its divisors is an integer number (59940).

2⁹⁹⁴⁹⁹⁰ is an apocalyptic number.

994990 is a deficient number, since it is larger than the sum of its proper divisors (923090).

994990 is a wasteful number, since it uses less digits than its factorization.

994990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 994990 is about 997.4918546033. The cubic root of 994990 is about 99.8327203312.

The spelling of 994990 in words is "nine hundred ninety-four thousand, nine hundred ninety".