90260905 has 32 divisors (see below), whose sum is σ = 135613440. Its totient is φ = 56232960.

The previous prime is 90260893. The next prime is 90260921. The reversal of 90260905 is 50906209.

It is not a de Polignac number, because 90260905 - 2⁵ = 90260873 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14640 + ... + 19870.

It is an arithmetic number, because the mean of its divisors is an integer number (4237920).

Almost surely, 2^90260905 is an apocalyptic number.

It is an amenable number.

90260905 is a deficient number, since it is larger than the sum of its proper divisors (45352535).

90260905 is a wasteful number, since it uses less digits than its factorization.

90260905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 90260905 is about 9500.5739300318. The cubic root of 90260905 is about 448.5731016505.

The spelling of 90260905 in words is "ninety million, two hundred sixty thousand, nine hundred five".