83987319 has 16 divisors (see below), whose sum is σ = 120766464. Its totient is φ = 51612000.

The previous prime is 83987317. The next prime is 83987347. The reversal of 83987319 is 91378938.

It is not a de Polignac number, because 83987319 - 2¹ = 83987317 is a prime.

It is a super-2 number, since 2×83987319² = 14107739505615522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83987317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43954 + ... + 45824.

It is an arithmetic number, because the mean of its divisors is an integer number (7547904).

Almost surely, 2^83987319 is an apocalyptic number.

83987319 is a deficient number, since it is larger than the sum of its proper divisors (36779145).

83987319 is a wasteful number, since it uses less digits than its factorization.

83987319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038.

The product of its digits is 326592, while the sum is 48.

The square root of 83987319 is about 9164.4595585337. The cubic root of 83987319 is about 437.9298745137.

The spelling of 83987319 in words is "eighty-three million, nine hundred eighty-seven thousand, three hundred nineteen".