83874287 has 4 divisors (see below), whose sum is σ = 95856336. Its totient is φ = 71892240.

The previous prime is 83874269. The next prime is 83874289. The reversal of 83874287 is 78247838.

It is a happy number.

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

It is not a de Polignac number, because 83874287 - 2²² = 79679983 is a prime.

It is a super-3 number, since 3×83874287³ (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 (83874289) 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, 5991014 + ... + 5991027.

It is an arithmetic number, because the mean of its divisors is an integer number (23964084).

Almost surely, 2^83874287 is an apocalyptic number.

83874287 is a deficient number, since it is larger than the sum of its proper divisors (11982049).

83874287 is a wasteful number, since it uses less digits than its factorization.

83874287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11982048.

The product of its digits is 602112, while the sum is 47.

The square root of 83874287 is about 9158.2906156116. The cubic root of 83874287 is about 437.7333277299.

The spelling of 83874287 in words is "eighty-three million, eight hundred seventy-four thousand, two hundred eighty-seven".