83831965 has 16 divisors (see below), whose sum is σ = 115620480. Its totient is φ = 57159360.

The previous prime is 83831963. The next prime is 83831989. The reversal of 83831965 is 56913838.

It is not a de Polignac number, because 83831965 - 2¹ = 83831963 is a prime.

It is a super-2 number, since 2×83831965² = 14055596711522450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83831963) 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 15 ways as a sum of consecutive naturals, for example, 426 + ... + 12955.

It is an arithmetic number, because the mean of its divisors is an integer number (7226280).

Almost surely, 2^83831965 is an apocalyptic number.

It is an amenable number.

83831965 is a deficient number, since it is larger than the sum of its proper divisors (31788515).

83831965 is a wasteful number, since it uses less digits than its factorization.

83831965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13572.

The product of its digits is 155520, while the sum is 43.

The square root of 83831965 is about 9155.9797400387. The cubic root of 83831965 is about 437.6596902764.

The spelling of 83831965 in words is "eighty-three million, eight hundred thirty-one thousand, nine hundred sixty-five".