90303901 has 2 divisors, whose sum is σ = 90303902. Its totient is φ = 90303900.

The previous prime is 90303893. The next prime is 90303947. The reversal of 90303901 is 10930309.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90231001 + 72900 = 9499^2 + 270^2 .

It is a cyclic number.

It is not a de Polignac number, because 90303901 - 2³ = 90303893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90303001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45151950 + 45151951.

It is an arithmetic number, because the mean of its divisors is an integer number (45151951).

Almost surely, 2^90303901 is an apocalyptic number.

It is an amenable number.

90303901 is a deficient number, since it is larger than the sum of its proper divisors (1).

90303901 is an equidigital number, since it uses as much as digits as its factorization.

90303901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 25.

The square root of 90303901 is about 9502.8364712858. The cubic root of 90303901 is about 448.6443166372.

It can be divided in two parts, 90303 and 901, that added together give a square (91204 = 302²).

The spelling of 90303901 in words is "ninety million, three hundred three thousand, nine hundred one".