83638394 has 24 divisors (see below), whose sum is σ = 146266560. Its totient is φ = 35765016.

The previous prime is 83638393. The next prime is 83638411. The reversal of 83638394 is 49383638.

It is not an unprimeable number, because it can be changed into a prime (83638393) 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, 69869 + ... + 71055.

It is an arithmetic number, because the mean of its divisors is an integer number (6094440).

Almost surely, 2^83638394 is an apocalyptic number.

83638394 is a deficient number, since it is larger than the sum of its proper divisors (62628166).

83638394 is a wasteful number, since it uses less digits than its factorization.

83638394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922 (or 1915 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The square root of 83638394 is about 9145.4028888836. The cubic root of 83638394 is about 437.3225733883.

The spelling of 83638394 in words is "eighty-three million, six hundred thirty-eight thousand, three hundred ninety-four".