83961345 has 16 divisors (see below), whose sum is σ = 144672192. Its totient is φ = 41334720.

The previous prime is 83961343. The next prime is 83961379. The reversal of 83961345 is 54316938.

It is not a de Polignac number, because 83961345 - 2¹ = 83961343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (83961343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215091 + ... + 215480.

It is an arithmetic number, because the mean of its divisors is an integer number (9042012).

Almost surely, 2^83961345 is an apocalyptic number.

It is an amenable number.

83961345 is a deficient number, since it is larger than the sum of its proper divisors (60710847).

83961345 is a wasteful number, since it uses less digits than its factorization.

83961345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430592.

The product of its digits is 77760, while the sum is 39.

The square root of 83961345 is about 9163.0423441126. The cubic root of 83961345 is about 437.8847249860.

The spelling of 83961345 in words is "eighty-three million, nine hundred sixty-one thousand, three hundred forty-five".