83872487 has 8 divisors (see below), whose sum is σ = 85881600. Its totient is φ = 81872824.

The previous prime is 83872471. The next prime is 83872507. The reversal of 83872487 is 78427838.

It is a happy number.

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 83872487 - 2⁴ = 83872471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83872457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17564 + ... + 21822.

It is an arithmetic number, because the mean of its divisors is an integer number (10735200).

Almost surely, 2^83872487 is an apocalyptic number.

83872487 is a deficient number, since it is larger than the sum of its proper divisors (2009113).

83872487 is a wasteful number, since it uses less digits than its factorization.

83872487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4725.

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

The square root of 83872487 is about 9158.1923434704. The cubic root of 83872487 is about 437.7301963545.

The spelling of 83872487 in words is "eighty-three million, eight hundred seventy-two thousand, four hundred eighty-seven".