83639121 has 8 divisors (see below), whose sum is σ = 117388320. Its totient is φ = 52824672.

The previous prime is 83639089. The next prime is 83639131. The reversal of 83639121 is 12193638.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83639121 - 2⁵ = 83639089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83639131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733620 + ... + 733733.

It is an arithmetic number, because the mean of its divisors is an integer number (14673540).

Almost surely, 2^83639121 is an apocalyptic number.

It is an amenable number.

83639121 is a deficient number, since it is larger than the sum of its proper divisors (33749199).

83639121 is a wasteful number, since it uses less digits than its factorization.

83639121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467375.

The product of its digits is 7776, while the sum is 33.

The square root of 83639121 is about 9145.4426355426. The cubic root of 83639121 is about 437.3238404802.

The spelling of 83639121 in words is "eighty-three million, six hundred thirty-nine thousand, one hundred twenty-one".