90203941 has 2 divisors, whose sum is σ = 90203942. Its totient is φ = 90203940.

The previous prime is 90203917. The next prime is 90203957. The reversal of 90203941 is 14930209.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89699841 + 504100 = 9471^2 + 710^2 .

It is a cyclic number.

It is not a de Polignac number, because 90203941 - 2⁹ = 90203429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90203741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45101970 + 45101971.

It is an arithmetic number, because the mean of its divisors is an integer number (45101971).

Almost surely, 2^90203941 is an apocalyptic number.

It is an amenable number.

90203941 is a deficient number, since it is larger than the sum of its proper divisors (1).

90203941 is an equidigital number, since it uses as much as digits as its factorization.

90203941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 90203941 is about 9497.5755327347. The cubic root of 90203941 is about 448.4787163960.

The spelling of 90203941 in words is "ninety million, two hundred three thousand, nine hundred forty-one".