91659743 has 12 divisors (see below), whose sum is σ = 112237560. Its totient is φ = 74429712.

The previous prime is 91659739. The next prime is 91659751. The reversal of 91659743 is 34795619.

It is not a de Polignac number, because 91659743 - 2² = 91659739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91659694 and 91659703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91659773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48296 + ... + 50157.

It is an arithmetic number, because the mean of its divisors is an integer number (9353130).

Almost surely, 2^91659743 is an apocalyptic number.

91659743 is a deficient number, since it is larger than the sum of its proper divisors (20577817).

91659743 is a wasteful number, since it uses less digits than its factorization.

91659743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98486 (or 98479 counting only the distinct ones).

The product of its digits is 204120, while the sum is 44.

The square root of 91659743 is about 9573.9094940364. The cubic root of 91659743 is about 450.8785191728.

The spelling of 91659743 in words is "ninety-one million, six hundred fifty-nine thousand, seven hundred forty-three".