83409638 has 32 divisors (see below), whose sum is σ = 142091712. Its totient is φ = 36432000.

The previous prime is 83409619. The next prime is 83409647. The reversal of 83409638 is 83690438.

It is a super-2 number, since 2×83409638² = 13914335422582088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83409595 and 83409604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59708 + ... + 61088.

It is an arithmetic number, because the mean of its divisors is an integer number (4440366).

Almost surely, 2^83409638 is an apocalyptic number.

83409638 is a deficient number, since it is larger than the sum of its proper divisors (58682074).

83409638 is a wasteful number, since it uses less digits than its factorization.

83409638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 83409638 is about 9132.8877141899. The cubic root of 83409638 is about 436.9235082305.

The spelling of 83409638 in words is "eighty-three million, four hundred nine thousand, six hundred thirty-eight".