90347091 has 4 divisors (see below), whose sum is σ = 120462792. Its totient is φ = 60231392.

The previous prime is 90347087. The next prime is 90347107. The reversal of 90347091 is 19074309.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90347091 - 2² = 90347087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90347291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15057846 + ... + 15057851.

It is an arithmetic number, because the mean of its divisors is an integer number (30115698).

Almost surely, 2^90347091 is an apocalyptic number.

90347091 is a deficient number, since it is larger than the sum of its proper divisors (30115701).

90347091 is a wasteful number, since it uses less digits than its factorization.

90347091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30115700.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 90347091 is about 9505.1086790210. The cubic root of 90347091 is about 448.7158301949.

The spelling of 90347091 in words is "ninety million, three hundred forty-seven thousand, ninety-one".