83393947 has 8 divisors (see below), whose sum is σ = 102638816. Its totient is φ = 65981952.

The previous prime is 83393939. The next prime is 83393951. The reversal of 83393947 is 74939338.

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 83393947 - 2³ = 83393939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83393897 and 83393906.

It is not an unprimeable number, because it can be changed into a prime (83393917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458118 + ... + 458299.

It is an arithmetic number, because the mean of its divisors is an integer number (12829852).

Almost surely, 2^83393947 is an apocalyptic number.

83393947 is a deficient number, since it is larger than the sum of its proper divisors (19244869).

83393947 is a wasteful number, since it uses less digits than its factorization.

83393947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916437.

The product of its digits is 489888, while the sum is 46.

The square root of 83393947 is about 9132.0286355223. The cubic root of 83393947 is about 436.8961085323.

It can be divided in two parts, 833939 and 47, that added together give a triangular number (833986 = T₁₂₉₁).

The spelling of 83393947 in words is "eighty-three million, three hundred ninety-three thousand, nine hundred forty-seven".