83638329 has 4 divisors (see below), whose sum is σ = 111517776. Its totient is φ = 55758884.

The previous prime is 83638309. The next prime is 83638339. The reversal of 83638329 is 92383638.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83638329 - 2⁹ = 83637817 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (83638309) 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, 13939719 + ... + 13939724.

It is an arithmetic number, because the mean of its divisors is an integer number (27879444).

Almost surely, 2^83638329 is an apocalyptic number.

It is an amenable number.

83638329 is a deficient number, since it is larger than the sum of its proper divisors (27879447).

83638329 is a wasteful number, since it uses less digits than its factorization.

83638329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27879446.

The product of its digits is 186624, while the sum is 42.

The square root of 83638329 is about 9145.3993351849. The cubic root of 83638329 is about 437.3224600991.

The spelling of 83638329 in words is "eighty-three million, six hundred thirty-eight thousand, three hundred twenty-nine".