90095991 has 8 divisors (see below), whose sum is σ = 125351040. Its totient is φ = 57452472.

The previous prime is 90095989. The next prime is 90096001. The reversal of 90095991 is 19959009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90095991 - 2¹ = 90095989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90095911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652801 + ... + 652938.

It is an arithmetic number, because the mean of its divisors is an integer number (15668880).

Almost surely, 2^90095991 is an apocalyptic number.

90095991 is a deficient number, since it is larger than the sum of its proper divisors (35255049).

90095991 is a wasteful number, since it uses less digits than its factorization.

90095991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305765.

The product of its (nonzero) digits is 32805, while the sum is 42.

The square root of 90095991 is about 9491.8908021532. The cubic root of 90095991 is about 448.2997419435.

The spelling of 90095991 in words is "ninety million, ninety-five thousand, nine hundred ninety-one".