90900910 has 32 divisors (see below), whose sum is σ = 167110272. Its totient is φ = 35592480.

The previous prime is 90900907. The next prime is 90900913. The reversal of 90900910 is 1900909.

It is an interprime number because it is at equal distance from previous prime (90900907) and next prime (90900913).

It is a super-3 number, since 3×90900910³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90900913) 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, 141049 + ... + 141691.

It is an arithmetic number, because the mean of its divisors is an integer number (5222196).

Almost surely, 2^90900910 is an apocalyptic number.

90900910 is a deficient number, since it is larger than the sum of its proper divisors (76209362).

90900910 is a wasteful number, since it uses less digits than its factorization.

90900910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928.

The product of its (nonzero) digits is 729, while the sum is 28.

The square root of 90900910 is about 9534.1968723118. The cubic root of 90900910 is about 449.6308247874.

The spelling of 90900910 in words is "ninety million, nine hundred thousand, nine hundred ten".