91879229471 has 8 divisors (see below), whose sum is σ = 92049487824. Its totient is φ = 91709130240.

The previous prime is 91879229443. The next prime is 91879229513. The reversal of 91879229471 is 17492297819.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91879229471 is a prime.

It is a super-3 number, since 3×91879229471³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91879229471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91879229411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1148735 + ... + 1226111.

It is an arithmetic number, because the mean of its divisors is an integer number (11506185978).

Almost surely, 2^91879229471 is an apocalyptic number.

91879229471 is a deficient number, since it is larger than the sum of its proper divisors (170258353).

91879229471 is a wasteful number, since it uses less digits than its factorization.

91879229471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79561.

The product of its digits is 4572288, while the sum is 59.

The spelling of 91879229471 in words is "ninety-one billion, eight hundred seventy-nine million, two hundred twenty-nine thousand, four hundred seventy-one".