83397291 has 8 divisors (see below), whose sum is σ = 117737424. Its totient is φ = 52327680.

The previous prime is 83397247. The next prime is 83397319. The reversal of 83397291 is 19279338.

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

It is not a de Polignac number, because 83397291 - 2⁶ = 83397227 is a prime.

It is a super-2 number, since 2×83397291² = 13910216292277362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83397211) 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, 817570 + ... + 817671.

It is an arithmetic number, because the mean of its divisors is an integer number (14717178).

Almost surely, 2^83397291 is an apocalyptic number.

83397291 is a deficient number, since it is larger than the sum of its proper divisors (34340133).

83397291 is a wasteful number, since it uses less digits than its factorization.

83397291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635261.

The product of its digits is 81648, while the sum is 42.

The square root of 83397291 is about 9132.2117255351. The cubic root of 83397291 is about 436.9019481290.

The spelling of 83397291 in words is "eighty-three million, three hundred ninety-seven thousand, two hundred ninety-one".