83609845 has 16 divisors (see below), whose sum is σ = 112001472. Its totient is φ = 59391360.

The previous prime is 83609843. The next prime is 83609849. The reversal of 83609845 is 54890638.

It is not a de Polignac number, because 83609845 - 2¹ = 83609843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83609843) 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, 15312 + ... + 20041.

It is an arithmetic number, because the mean of its divisors is an integer number (7000092).

Almost surely, 2^83609845 is an apocalyptic number.

It is an amenable number.

83609845 is a deficient number, since it is larger than the sum of its proper divisors (28391627).

83609845 is a wasteful number, since it uses less digits than its factorization.

83609845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35412.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 83609845 is about 9143.8419168312. The cubic root of 83609845 is about 437.2728093889.

The spelling of 83609845 in words is "eighty-three million, six hundred nine thousand, eight hundred forty-five".