83945775 has 24 divisors (see below), whose sum is σ = 139058560. Its totient is φ = 44684640.

The previous prime is 83945759. The next prime is 83945777. The reversal of 83945775 is 57754938.

It is not a de Polignac number, because 83945775 - 2⁴ = 83945759 is a prime.

It is a congruent number.

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

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63774 + ... + 65076.

Almost surely, 2^83945775 is an apocalyptic number.

83945775 is a deficient number, since it is larger than the sum of its proper divisors (55112785).

83945775 is a wasteful number, since it uses less digits than its factorization.

83945775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175 (or 2170 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 48.

The square root of 83945775 is about 9162.1926960745. The cubic root of 83945775 is about 437.8576558363.

The spelling of 83945775 in words is "eighty-three million, nine hundred forty-five thousand, seven hundred seventy-five".