83047387 has 4 divisors (see below), whose sum is σ = 85911120. Its totient is φ = 80183656.

The previous prime is 83047381. The next prime is 83047409. The reversal of 83047387 is 78374038.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83047387 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83047381) 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 3 ways as a sum of consecutive naturals, for example, 1431823 + ... + 1431880.

It is an arithmetic number, because the mean of its divisors is an integer number (21477780).

Almost surely, 2^83047387 is an apocalyptic number.

83047387 is a deficient number, since it is larger than the sum of its proper divisors (2863733).

83047387 is a wasteful number, since it uses less digits than its factorization.

83047387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2863732.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 83047387 is about 9113.0339075414. The cubic root of 83047387 is about 436.2900655862.

The spelling of 83047387 in words is "eighty-three million, forty-seven thousand, three hundred eighty-seven".