90910143 has 12 divisors (see below), whose sum is σ = 131715688. Its totient is φ = 60421680.

The previous prime is 90910139. The next prime is 90910177. The reversal of 90910143 is 34101909.

It is not a de Polignac number, because 90910143 - 2² = 90910139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90910133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12280 + ... + 18237.

Almost surely, 2^90910143 is an apocalyptic number.

90910143 is a deficient number, since it is larger than the sum of its proper divisors (40805545).

90910143 is a wasteful number, since it uses less digits than its factorization.

90910143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30854 (or 30851 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 90910143 is about 9534.6810644090. The cubic root of 90910143 is about 449.6460475938.

The spelling of 90910143 in words is "ninety million, nine hundred ten thousand, one hundred forty-three".