83809476 has 36 divisors (see below), whose sum is σ = 213410652. Its totient is φ = 27730944.

The previous prime is 83809471. The next prime is 83809487. The reversal of 83809476 is 67490838.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28901376 + 54908100 = 5376^2 + 7410^2 .

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 (83809471) 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, 3565 + ... + 13428.

Almost surely, 2^83809476 is an apocalyptic number.

It is an amenable number.

83809476 is an abundant number, since it is smaller than the sum of its proper divisors (129601176).

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

83809476 is a wasteful number, since it uses less digits than its factorization.

83809476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17140 (or 17135 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 83809476 is about 9154.7515531553. The cubic root of 83809476 is about 437.6205508342.

The spelling of 83809476 in words is "eighty-three million, eight hundred nine thousand, four hundred seventy-six".