91794229 has 2 divisors, whose sum is σ = 91794230. Its totient is φ = 91794228.

The previous prime is 91794223. The next prime is 91794233. The reversal of 91794229 is 92249719.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86527204 + 5267025 = 9302^2 + 2295^2 .

It is an emirp because it is prime and its reverse (92249719) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91794229 - 2²¹ = 89697077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91794223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45897114 + 45897115.

It is an arithmetic number, because the mean of its divisors is an integer number (45897115).

Almost surely, 2^91794229 is an apocalyptic number.

It is an amenable number.

91794229 is a deficient number, since it is larger than the sum of its proper divisors (1).

91794229 is an equidigital number, since it uses as much as digits as its factorization.

91794229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 91794229 is about 9580.9304871709. The cubic root of 91794229 is about 451.0989256988.

The spelling of 91794229 in words is "ninety-one million, seven hundred ninety-four thousand, two hundred twenty-nine".