916990 has 16 divisors (see below), whose sum is σ = 1667952. Its totient is φ = 362944.

The previous prime is 916973. The next prime is 916999. The reversal of 916990 is 99619.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916999) by changing a digit.

916990 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642 + ... + 1498.

It is an arithmetic number, because the mean of its divisors is an integer number (104247).

2⁹¹⁶⁹⁹⁰ is an apocalyptic number.

916990 is a deficient number, since it is larger than the sum of its proper divisors (750962).

916990 is a wasteful number, since it uses less digits than its factorization.

916990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 916990 is about 957.5959481953. The cubic root of 916990 is about 97.1526981709.

The spelling of 916990 in words is "nine hundred sixteen thousand, nine hundred ninety".