90020003 has 2 divisors, whose sum is σ = 90020004. Its totient is φ = 90020002.

The previous prime is 90019997. The next prime is 90020033. The reversal of 90020003 is 30002009.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (30002009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90020003 - 2¹⁸ = 89757859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90020003.

It is not a weakly prime, because it can be changed into another prime (90020033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45010001 + 45010002.

It is an arithmetic number, because the mean of its divisors is an integer number (45010002).

Almost surely, 2^90020003 is an apocalyptic number.

90020003 is a deficient number, since it is larger than the sum of its proper divisors (1).

90020003 is an equidigital number, since it uses as much as digits as its factorization.

90020003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 90020003 is about 9487.8871726007. The cubic root of 90020003 is about 448.1736727664.

The spelling of 90020003 in words is "ninety million, twenty thousand, three".