83932991 has 8 divisors (see below), whose sum is σ = 85379424. Its totient is φ = 82494720.

The previous prime is 83932969. The next prime is 83932993. The reversal of 83932991 is 19923938.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83932991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83932993) 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, 20855 + ... + 24551.

It is an arithmetic number, because the mean of its divisors is an integer number (10672428).

Almost surely, 2^83932991 is an apocalyptic number.

83932991 is a deficient number, since it is larger than the sum of its proper divisors (1446433).

83932991 is a wasteful number, since it uses less digits than its factorization.

83932991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081.

The product of its digits is 104976, while the sum is 44.

The square root of 83932991 is about 9161.4950199190. The cubic root of 83932991 is about 437.8354277713.

The spelling of 83932991 in words is "eighty-three million, nine hundred thirty-two thousand, nine hundred ninety-one".