90167087 has 4 divisors (see below), whose sum is σ = 92264040. Its totient is φ = 88070136.

The previous prime is 90167071. The next prime is 90167093. The reversal of 90167087 is 78076109.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90167087 - 2⁴ = 90167071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90167087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90167047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1048412 + ... + 1048497.

It is an arithmetic number, because the mean of its divisors is an integer number (23066010).

Almost surely, 2^90167087 is an apocalyptic number.

90167087 is a deficient number, since it is larger than the sum of its proper divisors (2096953).

90167087 is a wasteful number, since it uses less digits than its factorization.

90167087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096952.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 90167087 is about 9495.6351551647. The cubic root of 90167087 is about 448.4176307942.

The spelling of 90167087 in words is "ninety million, one hundred sixty-seven thousand, eighty-seven".