91793397 has 8 divisors (see below), whose sum is σ = 124995456. Its totient is φ = 59893472.

The previous prime is 91793371. The next prime is 91793399. The reversal of 91793397 is 79339719.

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 91793397 - 2¹⁶ = 91727861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91793399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325368 + ... + 325649.

It is an arithmetic number, because the mean of its divisors is an integer number (15624432).

Almost surely, 2^91793397 is an apocalyptic number.

It is an amenable number.

91793397 is a deficient number, since it is larger than the sum of its proper divisors (33202059).

91793397 is a wasteful number, since it uses less digits than its factorization.

91793397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651067.

The product of its digits is 321489, while the sum is 48.

The square root of 91793397 is about 9580.8870674901. The cubic root of 91793397 is about 451.0975628119.

It can be divided in two parts, 91 and 793397, that multiplied together give a palindrome (72199127).

The spelling of 91793397 in words is "ninety-one million, seven hundred ninety-three thousand, three hundred ninety-seven".