83945771 has 12 divisors (see below), whose sum is σ = 105163632. Its totient is φ = 66418128.

The previous prime is 83945759. The next prime is 83945777. The reversal of 83945771 is 17754938.

It is not a de Polignac number, because 83945771 - 2¹⁰ = 83944747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83945777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65255 + ... + 66528.

It is an arithmetic number, because the mean of its divisors is an integer number (8763636).

Almost surely, 2^83945771 is an apocalyptic number.

83945771 is a deficient number, since it is larger than the sum of its proper divisors (21217861).

83945771 is a wasteful number, since it uses less digits than its factorization.

83945771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131810 (or 131803 counting only the distinct ones).

The product of its digits is 211680, while the sum is 44.

The square root of 83945771 is about 9162.1924777861. The cubic root of 83945771 is about 437.8576488817.

The spelling of 83945771 in words is "eighty-three million, nine hundred forty-five thousand, seven hundred seventy-one".