83994647 has 8 divisors (see below), whose sum is σ = 91711872. Its totient is φ = 76291000.

The previous prime is 83994641. The next prime is 83994667. The reversal of 83994647 is 74649938.

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

It is a cyclic number.

It is not a de Polignac number, because 83994647 - 2¹⁸ = 83732503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83994595 and 83994604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83994641) 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, 13022 + ... + 18372.

It is an arithmetic number, because the mean of its divisors is an integer number (11463984).

Almost surely, 2^83994647 is an apocalyptic number.

83994647 is a deficient number, since it is larger than the sum of its proper divisors (7717225).

83994647 is a wasteful number, since it uses less digits than its factorization.

83994647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6789.

The product of its digits is 1306368, while the sum is 50.

The square root of 83994647 is about 9164.8593551674. The cubic root of 83994647 is about 437.9426107888.

The spelling of 83994647 in words is "eighty-three million, nine hundred ninety-four thousand, six hundred forty-seven".