90036291 has 8 divisors (see below), whose sum is σ = 120130560. Its totient is φ = 59983112.

The previous prime is 90036251. The next prime is 90036299. The reversal of 90036291 is 19263009.

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

It is a cyclic number.

It is not a de Polignac number, because 90036291 - 2⁹ = 90035779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90036299) 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, 4731 + ... + 14228.

It is an arithmetic number, because the mean of its divisors is an integer number (15016320).

Almost surely, 2^90036291 is an apocalyptic number.

90036291 is a deficient number, since it is larger than the sum of its proper divisors (30094269).

90036291 is a wasteful number, since it uses less digits than its factorization.

90036291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20545.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 90036291 is about 9488.7454913703. The cubic root of 90036291 is about 448.2007016204.

The spelling of 90036291 in words is "ninety million, thirty-six thousand, two hundred ninety-one".