83409812 has 24 divisors (see below), whose sum is σ = 148040256. Its totient is φ = 41116608.

The previous prime is 83409811. The next prime is 83409827. The reversal of 83409812 is 21890438.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83409811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182288 + ... + 182744.

It is an arithmetic number, because the mean of its divisors is an integer number (6168344).

Almost surely, 2^83409812 is an apocalyptic number.

It is an amenable number.

83409812 is a deficient number, since it is larger than the sum of its proper divisors (64630444).

83409812 is a wasteful number, since it uses less digits than its factorization.

83409812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 83409812 is about 9132.8972401971. The cubic root of 83409812 is about 436.9238120508.

The spelling of 83409812 in words is "eighty-three million, four hundred nine thousand, eight hundred twelve".