8799643 has 4 divisors (see below), whose sum is σ = 8965728. Its totient is φ = 8633560.

The previous prime is 8799619. The next prime is 8799671. The reversal of 8799643 is 3469978.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3469978 = 2 ⋅1734989.

It is a cyclic number.

It is not a de Polignac number, because 8799643 - 2⁵ = 8799611 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8799593 and 8799602.

It is not an unprimeable number, because it can be changed into a prime (8799613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82963 + ... + 83068.

It is an arithmetic number, because the mean of its divisors is an integer number (2241432).

Almost surely, 2^8799643 is an apocalyptic number.

8799643 is a deficient number, since it is larger than the sum of its proper divisors (166085).

8799643 is a wasteful number, since it uses less digits than its factorization.

8799643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166084.

The product of its digits is 326592, while the sum is 46.

The square root of 8799643 is about 2966.4192218903. The cubic root of 8799643 is about 206.4532312050.

The spelling of 8799643 in words is "eight million, seven hundred ninety-nine thousand, six hundred forty-three".