83945371 has 4 divisors (see below), whose sum is σ = 88883352. Its totient is φ = 79007392.

The previous prime is 83945357. The next prime is 83945413. The reversal of 83945371 is 17354938.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83945371 - 2⁵ = 83945339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83945471) 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 3 ways as a sum of consecutive naturals, for example, 2468965 + ... + 2468998.

It is an arithmetic number, because the mean of its divisors is an integer number (22220838).

Almost surely, 2^83945371 is an apocalyptic number.

83945371 is a deficient number, since it is larger than the sum of its proper divisors (4937981).

83945371 is a wasteful number, since it uses less digits than its factorization.

83945371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4937980.

The product of its digits is 90720, while the sum is 40.

The square root of 83945371 is about 9162.1706489238. The cubic root of 83945371 is about 437.8569534195.

The spelling of 83945371 in words is "eighty-three million, nine hundred forty-five thousand, three hundred seventy-one".