8479991 has 8 divisors (see below), whose sum is σ = 9669744. Its totient is φ = 7367040.

The previous prime is 8479981. The next prime is 8480033. The reversal of 8479991 is 1999748.

8479991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-8479991 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 (8479951) 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, 18965 + ... + 19406.

It is an arithmetic number, because the mean of its divisors is an integer number (1208718).

Almost surely, 2^8479991 is an apocalyptic number.

8479991 is a deficient number, since it is larger than the sum of its proper divisors (1189753).

8479991 is a wasteful number, since it uses less digits than its factorization.

8479991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38401.

The product of its digits is 163296, while the sum is 47.

The square root of 8479991 is about 2912.0424104055. The cubic root of 8479991 is about 203.9224923420.

The spelling of 8479991 in words is "eight million, four hundred seventy-nine thousand, nine hundred ninety-one".