90100003 has 4 divisors (see below), whose sum is σ = 102971440. Its totient is φ = 77228568.

The previous prime is 90099991. The next prime is 90100009. The reversal of 90100003 is 30000109.

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 90100003 - 2¹³ = 90091811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90100009) 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, 6435708 + ... + 6435721.

It is an arithmetic number, because the mean of its divisors is an integer number (25742860).

Almost surely, 2^90100003 is an apocalyptic number.

90100003 is a deficient number, since it is larger than the sum of its proper divisors (12871437).

90100003 is a wasteful number, since it uses less digits than its factorization.

90100003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12871436.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 90100003 is about 9492.1021380935. The cubic root of 90100003 is about 448.3063961495.

The spelling of 90100003 in words is "ninety million, one hundred thousand, three".