91854787 has 2 divisors, whose sum is σ = 91854788. Its totient is φ = 91854786.

The previous prime is 91854781. The next prime is 91854793. The reversal of 91854787 is 78745819.

It is a balanced prime because it is at equal distance from previous prime (91854781) and next prime (91854793).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91854787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91854787.

It is not a weakly prime, because it can be changed into another prime (91854781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45927393 + 45927394.

It is an arithmetic number, because the mean of its divisors is an integer number (45927394).

Almost surely, 2^91854787 is an apocalyptic number.

91854787 is a deficient number, since it is larger than the sum of its proper divisors (1).

91854787 is an equidigital number, since it uses as much as digits as its factorization.

91854787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 49.

The square root of 91854787 is about 9584.0903063358. The cubic root of 91854787 is about 451.1981027529.

The spelling of 91854787 in words is "ninety-one million, eight hundred fifty-four thousand, seven hundred eighty-seven".