90108911 has 2 divisors, whose sum is σ = 90108912. Its totient is φ = 90108910.

The previous prime is 90108899. The next prime is 90108919. The reversal of 90108911 is 11980109.

It is a strong prime.

It is an emirp because it is prime and its reverse (11980109) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90108911 - 2²² = 85914607 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90108919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45054455 + 45054456.

It is an arithmetic number, because the mean of its divisors is an integer number (45054456).

Almost surely, 2^90108911 is an apocalyptic number.

90108911 is a deficient number, since it is larger than the sum of its proper divisors (1).

90108911 is an equidigital number, since it uses as much as digits as its factorization.

90108911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 90108911 is about 9492.5713586994. The cubic root of 90108911 is about 448.3211700365.

It can be divided in two parts, 90108 and 911, that added together give a palindrome (91019).

The spelling of 90108911 in words is "ninety million, one hundred eight thousand, nine hundred eleven".