91240333 has 8 divisors (see below), whose sum is σ = 95400000. Its totient is φ = 87261724.

The previous prime is 91240327. The next prime is 91240421. The reversal of 91240333 is 33304219.

It is a happy number.

It is not a de Polignac number, because 91240333 - 2⁹ = 91239821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91240298 and 91240307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91240313) 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, 8418 + ... + 15916.

It is an arithmetic number, because the mean of its divisors is an integer number (11925000).

Almost surely, 2^91240333 is an apocalyptic number.

It is an amenable number.

91240333 is a deficient number, since it is larger than the sum of its proper divisors (4159667).

91240333 is an frugal number, since it uses more digits than its factorization.

91240333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7568 (or 7522 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 91240333 is about 9551.9805799635. The cubic root of 91240333 is about 450.1897685216.

The spelling of 91240333 in words is "ninety-one million, two hundred forty thousand, three hundred thirty-three".