91040827 has 2 divisors, whose sum is σ = 91040828. Its totient is φ = 91040826.

The previous prime is 91040821. The next prime is 91040861. The reversal of 91040827 is 72804019.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91040827 - 2³ = 91040819 is a prime.

It is not a weakly prime, because it can be changed into another prime (91040821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45520413 + 45520414.

It is an arithmetic number, because the mean of its divisors is an integer number (45520414).

Almost surely, 2^91040827 is an apocalyptic number.

91040827 is a deficient number, since it is larger than the sum of its proper divisors (1).

91040827 is an equidigital number, since it uses as much as digits as its factorization.

91040827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 91040827 is about 9541.5316904573. The cubic root of 91040827 is about 449.8614009376.

The spelling of 91040827 in words is "ninety-one million, forty thousand, eight hundred twenty-seven".