83473891 has 4 divisors (see below), whose sum is σ = 84212712. Its totient is φ = 82735072.

The previous prime is 83473883. The next prime is 83473913. The reversal of 83473891 is 19837438.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 83473891 - 2³ = 83473883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83473811) 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, 369241 + ... + 369466.

It is an arithmetic number, because the mean of its divisors is an integer number (21053178).

Almost surely, 2^83473891 is an apocalyptic number.

83473891 is a deficient number, since it is larger than the sum of its proper divisors (738821).

83473891 is a wasteful number, since it uses less digits than its factorization.

83473891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738820.

The product of its digits is 145152, while the sum is 43.

The square root of 83473891 is about 9136.4047086368. The cubic root of 83473891 is about 437.0356712901.

The spelling of 83473891 in words is "eighty-three million, four hundred seventy-three thousand, eight hundred ninety-one".