90210937 has 2 divisors, whose sum is σ = 90210938. Its totient is φ = 90210936.

The previous prime is 90210881. The next prime is 90210949. The reversal of 90210937 is 73901209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56385081 + 33825856 = 7509^2 + 5816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90210937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90210899 and 90210908.

It is not a weakly prime, because it can be changed into another prime (90210977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45105468 + 45105469.

It is an arithmetic number, because the mean of its divisors is an integer number (45105469).

Almost surely, 2^90210937 is an apocalyptic number.

It is an amenable number.

90210937 is a deficient number, since it is larger than the sum of its proper divisors (1).

90210937 is an equidigital number, since it uses as much as digits as its factorization.

90210937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 90210937 is about 9497.9438301140. The cubic root of 90210937 is about 448.4903104053.

The spelling of 90210937 in words is "ninety million, two hundred ten thousand, nine hundred thirty-seven".