83409436 has 36 divisors (see below), whose sum is σ = 161995176. Its totient is φ = 37264000.

The previous prime is 83409413. The next prime is 83409461. The reversal of 83409436 is 63490438.

It is a junction number, because it is equal to n+sod(n) for n = 83409395 and 83409404.

It is a congruent number.

It is an unprimeable number.

It is a Kaprekar number, because its square (6957134013838096) can be partitioned into two parts whose sum is 83409436.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 608760 + ... + 608896.

It is an arithmetic number, because the mean of its divisors is an integer number (4499866).

Almost surely, 2^83409436 is an apocalyptic number.

It is an amenable number.

83409436 is a deficient number, since it is larger than the sum of its proper divisors (78585740).

83409436 is a wasteful number, since it uses less digits than its factorization.

83409436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 83409436 is about 9132.8766552494. The cubic root of 83409436 is about 436.9231555190.

It can be divided in two parts, 83409 and 436, that added together give a triangular number (83845 = T₄₀₉).

The spelling of 83409436 in words is "eighty-three million, four hundred nine thousand, four hundred thirty-six".