90863207 has 2 divisors, whose sum is σ = 90863208. Its totient is φ = 90863206.

The previous prime is 90863191. The next prime is 90863219. The reversal of 90863207 is 70236809.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90863207 - 2⁴ = 90863191 is a prime.

It is a super-2 number, since 2×90863207² = 16512244772649698, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90863237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45431603 + 45431604.

It is an arithmetic number, because the mean of its divisors is an integer number (45431604).

Almost surely, 2^90863207 is an apocalyptic number.

90863207 is a deficient number, since it is larger than the sum of its proper divisors (1).

90863207 is an equidigital number, since it uses as much as digits as its factorization.

90863207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 90863207 is about 9532.2194162745. The cubic root of 90863207 is about 449.5686516830.

The spelling of 90863207 in words is "ninety million, eight hundred sixty-three thousand, two hundred seven".