91036090 has 8 divisors (see below), whose sum is σ = 163864980. Its totient is φ = 36414432.

The previous prime is 91036081. The next prime is 91036091. The reversal of 91036090 is 9063019.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 83302129 + 7733961 = 9127^2 + 2781^2 .

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

It is not an unprimeable number, because it can be changed into a prime (91036091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4551795 + ... + 4551814.

Almost surely, 2^91036090 is an apocalyptic number.

91036090 is a deficient number, since it is larger than the sum of its proper divisors (72828890).

91036090 is a wasteful number, since it uses less digits than its factorization.

91036090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9103616.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 91036090 is about 9541.2834566425. The cubic root of 91036090 is about 449.8535984659.

The spelling of 91036090 in words is "ninety-one million, thirty-six thousand, ninety".