91422741439 has 16 divisors (see below), whose sum is σ = 92556172800. Its totient is φ = 90297931680.

The previous prime is 91422741413. The next prime is 91422741499. The reversal of 91422741439 is 93414722419.

It is a cyclic number.

It is not a de Polignac number, because 91422741439 - 2⁵ = 91422741407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91422741499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23302332 + ... + 23306254.

It is an arithmetic number, because the mean of its divisors is an integer number (5784760800).

Almost surely, 2^91422741439 is an apocalyptic number.

91422741439 is a deficient number, since it is larger than the sum of its proper divisors (1133431361).

91422741439 is a wasteful number, since it uses less digits than its factorization.

91422741439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4950.

The product of its digits is 435456, while the sum is 46.

The spelling of 91422741439 in words is "ninety-one billion, four hundred twenty-two million, seven hundred forty-one thousand, four hundred thirty-nine".