91366062439 has 4 divisors (see below), whose sum is σ = 92466858456. Its totient is φ = 90265266424.

The previous prime is 91366062401. The next prime is 91366062449. The reversal of 91366062439 is 93426066319.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93426066319 = 71 ⋅1315860089.

It is a cyclic number.

It is not a de Polignac number, because 91366062439 - 2²³ = 91357673831 is a prime.

It is a Smith number, since the sum of its digits (49) 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 junction number, because it is equal to n+sod(n) for n = 91366062392 and 91366062401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91366062449) 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, 550397884 + ... + 550398049.

It is an arithmetic number, because the mean of its divisors is an integer number (23116714614).

Almost surely, 2^91366062439 is an apocalyptic number.

91366062439 is a deficient number, since it is larger than the sum of its proper divisors (1100796017).

91366062439 is a wasteful number, since it uses less digits than its factorization.

91366062439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100796016.

The product of its (nonzero) digits is 1259712, while the sum is 49.

The spelling of 91366062439 in words is "ninety-one billion, three hundred sixty-six million, sixty-two thousand, four hundred thirty-nine".