91964471039 has 16 divisors (see below), whose sum is σ = 113999006016. Its totient is φ = 72380313600.

The previous prime is 91964471029. The next prime is 91964471059. The reversal of 91964471039 is 93017446919.

It is not a de Polignac number, because 91964471039 - 2¹² = 91964466943 is a prime.

It is a super-3 number, since 3×91964471039³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91964471029) 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, 9419642 + ... + 9429399.

It is an arithmetic number, because the mean of its divisors is an integer number (7124937876).

Almost surely, 2^91964471039 is an apocalyptic number.

91964471039 is a deficient number, since it is larger than the sum of its proper divisors (22034534977).

91964471039 is a wasteful number, since it uses less digits than its factorization.

91964471039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18849106.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The spelling of 91964471039 in words is "ninety-one billion, nine hundred sixty-four million, four hundred seventy-one thousand, thirty-nine".