91120903 has 8 divisors (see below), whose sum is σ = 97269120. Its totient is φ = 85107960.

The previous prime is 91120889. The next prime is 91120919. The reversal of 91120903 is 30902119.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91120903 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 (91120103) 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, 32425 + ... + 35122.

It is an arithmetic number, because the mean of its divisors is an integer number (12158640).

Almost surely, 2^91120903 is an apocalyptic number.

91120903 is a deficient number, since it is larger than the sum of its proper divisors (6148217).

91120903 is a wasteful number, since it uses less digits than its factorization.

91120903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67637.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 91120903 is about 9545.7269497928. The cubic root of 91120903 is about 449.9932558660.

The spelling of 91120903 in words is "ninety-one million, one hundred twenty thousand, nine hundred three".