990167 has 4 divisors (see below), whose sum is σ = 992160. Its totient is φ = 988176.

The previous prime is 990163. The next prime is 990169. The reversal of 990167 is 761099.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 761099 = 223 ⋅3413.

It is a cyclic number.

It is not a de Polignac number, because 990167 - 2² = 990163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 990167.

It is not an unprimeable number, because it can be changed into a prime (990163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434 + ... + 1472.

It is an arithmetic number, because the mean of its divisors is an integer number (248040).

2⁹⁹⁰¹⁶⁷ is an apocalyptic number.

990167 is a deficient number, since it is larger than the sum of its proper divisors (1993).

990167 is a wasteful number, since it uses less digits than its factorization.

990167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 990167 is about 995.0713542254. The cubic root of 990167 is about 99.6711531160.

The spelling of 990167 in words is "nine hundred ninety thousand, one hundred sixty-seven".