83687444 has 12 divisors (see below), whose sum is σ = 146581344. Its totient is φ = 41807064.

The previous prime is 83687441. The next prime is 83687449. The reversal of 83687444 is 44478638.

It is a junction number, because it is equal to n+sod(n) for n = 83687395 and 83687404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83687441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3662 + ... + 13445.

It is an arithmetic number, because the mean of its divisors is an integer number (12215112).

Almost surely, 2^83687444 is an apocalyptic number.

It is an amenable number.

83687444 is a deficient number, since it is larger than the sum of its proper divisors (62893900).

83687444 is a wasteful number, since it uses less digits than its factorization.

83687444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18334 (or 18332 counting only the distinct ones).

The product of its digits is 516096, while the sum is 44.

The square root of 83687444 is about 9148.0841710164. The cubic root of 83687444 is about 437.4080464161.

The spelling of 83687444 in words is "eighty-three million, six hundred eighty-seven thousand, four hundred forty-four".