91079047 has 8 divisors (see below), whose sum is σ = 96558912. Its totient is φ = 85612800.

The previous prime is 91079033. The next prime is 91079059. The reversal of 91079047 is 74097019.

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-91079047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91078997 and 91079015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91079077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12547 + ... + 18427.

It is an arithmetic number, because the mean of its divisors is an integer number (12069864).

Almost surely, 2^91079047 is an apocalyptic number.

91079047 is a deficient number, since it is larger than the sum of its proper divisors (5479865).

91079047 is a wasteful number, since it uses less digits than its factorization.

91079047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6809.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 91079047 is about 9543.5343033910. The cubic root of 91079047 is about 449.9243444829.

The spelling of 91079047 in words is "ninety-one million, seventy-nine thousand, forty-seven".