83945772 has 36 divisors (see below), whose sum is σ = 212667000. Its totient is φ = 27919872.

The previous prime is 83945759. The next prime is 83945777. The reversal of 83945772 is 27754938.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 15628 + ... + 20300.

Almost surely, 2^83945772 is an apocalyptic number.

It is an amenable number.

83945772 is an abundant number, since it is smaller than the sum of its proper divisors (128721228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83945772 is a wasteful number, since it uses less digits than its factorization.

83945772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5182 (or 5177 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 83945772 is about 9162.1925323582. The cubic root of 83945772 is about 437.8576506204.

The spelling of 83945772 in words is "eighty-three million, nine hundred forty-five thousand, seven hundred seventy-two".