90004163 has 4 divisors (see below), whose sum is σ = 90059760. Its totient is φ = 89948568.

The previous prime is 90004157. The next prime is 90004169. The reversal of 90004163 is 36140009.

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

It is an interprime number because it is at equal distance from previous prime (90004157) and next prime (90004169).

It is a cyclic number.

It is not a de Polignac number, because 90004163 - 2¹⁰ = 90003139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90004169) 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, 25295 + ... + 28632.

It is an arithmetic number, because the mean of its divisors is an integer number (22514940).

Almost surely, 2^90004163 is an apocalyptic number.

90004163 is a deficient number, since it is larger than the sum of its proper divisors (55597).

90004163 is a wasteful number, since it uses less digits than its factorization.

90004163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55596.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 90004163 is about 9487.0523873330. The cubic root of 90004163 is about 448.1473842114.

The spelling of 90004163 in words is "ninety million, four thousand, one hundred sixty-three".