90911105 has 16 divisors (see below), whose sum is σ = 115128000. Its totient is φ = 68725440.

The previous prime is 90911101. The next prime is 90911129. The reversal of 90911105 is 50111909.

It is a happy number.

It is not a de Polignac number, because 90911105 - 2² = 90911101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90911101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45671 + ... + 47619.

It is an arithmetic number, because the mean of its divisors is an integer number (7195500).

Almost surely, 2^90911105 is an apocalyptic number.

90911105 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

90911105 is a deficient number, since it is larger than the sum of its proper divisors (24216895).

90911105 is a wasteful number, since it uses less digits than its factorization.

90911105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464.

The product of its (nonzero) digits is 405, while the sum is 26.

The square root of 90911105 is about 9534.7315116893. The cubic root of 90911105 is about 449.6476336213.

The spelling of 90911105 in words is "ninety million, nine hundred eleven thousand, one hundred five".