83870471 has 4 divisors (see below), whose sum is σ = 83920872. Its totient is φ = 83820072.

The previous prime is 83870467. The next prime is 83870473. The reversal of 83870471 is 17407838.

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 83870471 - 2² = 83870467 is a prime.

It is a super-3 number, since 3×83870471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83870473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22616 + ... + 26061.

It is an arithmetic number, because the mean of its divisors is an integer number (20980218).

Almost surely, 2^83870471 is an apocalyptic number.

83870471 is a deficient number, since it is larger than the sum of its proper divisors (50401).

83870471 is a wasteful number, since it uses less digits than its factorization.

83870471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50400.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 83870471 is about 9158.0822774203. The cubic root of 83870471 is about 437.7266891609.

The spelling of 83870471 in words is "eighty-three million, eight hundred seventy thousand, four hundred seventy-one".