83906291 has 8 divisors (see below), whose sum is σ = 95965440. Its totient is φ = 71865288.

The previous prime is 83906279. The next prime is 83906341. The reversal of 83906291 is 19260938.

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

It is a cyclic number.

It is not a de Polignac number, because 83906291 - 2⁶ = 83906227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83906591) 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, 7520 + ... + 14978.

It is an arithmetic number, because the mean of its divisors is an integer number (11995680).

Almost surely, 2^83906291 is an apocalyptic number.

83906291 is a deficient number, since it is larger than the sum of its proper divisors (12059149).

83906291 is a wasteful number, since it uses less digits than its factorization.

83906291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9073.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 83906291 is about 9160.0377182630. The cubic root of 83906291 is about 437.7889961056.

The spelling of 83906291 in words is "eighty-three million, nine hundred six thousand, two hundred ninety-one".