8495991 has 12 divisors (see below), whose sum is σ = 14025232. Its totient is φ = 4854816.

The previous prime is 8495989. The next prime is 8495999. The reversal of 8495991 is 1995948.

8495991 is digitally balanced in base 2, base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8495991 - 2¹ = 8495989 is a prime.

It is a Duffinian number.

8495991 is strictly pandigital in base 8.

8495991 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8495999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67366 + ... + 67491.

Almost surely, 2^8495991 is an apocalyptic number.

8495991 is a deficient number, since it is larger than the sum of its proper divisors (5529241).

8495991 is a wasteful number, since it uses less digits than its factorization.

8495991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134870 (or 134867 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 8495991 is about 2914.7883285069. The cubic root of 8495991 is about 204.0506650399.

The spelling of 8495991 in words is "eight million, four hundred ninety-five thousand, nine hundred ninety-one".