91794539 has 2 divisors, whose sum is σ = 91794540. Its totient is φ = 91794538.

The previous prime is 91794499. The next prime is 91794553. The reversal of 91794539 is 93549719.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91794539 - 2¹² = 91790443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91794493 and 91794502.

It is not a weakly prime, because it can be changed into another prime (91794559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45897269 + 45897270.

It is an arithmetic number, because the mean of its divisors is an integer number (45897270).

Almost surely, 2^91794539 is an apocalyptic number.

91794539 is a deficient number, since it is larger than the sum of its proper divisors (1).

91794539 is an equidigital number, since it uses as much as digits as its factorization.

91794539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 47.

The square root of 91794539 is about 9580.9466651266. The cubic root of 91794539 is about 451.0994335031.

The spelling of 91794539 in words is "ninety-one million, seven hundred ninety-four thousand, five hundred thirty-nine".