91514893 has 4 divisors (see below), whose sum is σ = 96898140. Its totient is φ = 86131648.

The previous prime is 91514881. The next prime is 91514903. The reversal of 91514893 is 39841519.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77211369 + 14303524 = 8787^2 + 3782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91514893 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91517893) 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, 2691598 + ... + 2691631.

It is an arithmetic number, because the mean of its divisors is an integer number (24224535).

Almost surely, 2^91514893 is an apocalyptic number.

It is an amenable number.

91514893 is a deficient number, since it is larger than the sum of its proper divisors (5383247).

91514893 is a wasteful number, since it uses less digits than its factorization.

91514893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5383246.

The product of its digits is 38880, while the sum is 40.

The square root of 91514893 is about 9566.3416727608. The cubic root of 91514893 is about 450.6408859995.

The spelling of 91514893 in words is "ninety-one million, five hundred fourteen thousand, eight hundred ninety-three".