83408081 has 4 divisors (see below), whose sum is σ = 87798000. Its totient is φ = 79018164.

The previous prime is 83408071. The next prime is 83408107. The reversal of 83408081 is 18080438.

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 a de Polignac number, because none of the positive numbers 2^k-83408081 is a prime.

It is a super-2 number, since 2×83408081² = 13913815952205122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83408071) 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, 2194931 + ... + 2194968.

It is an arithmetic number, because the mean of its divisors is an integer number (21949500).

Almost surely, 2^83408081 is an apocalyptic number.

It is an amenable number.

83408081 is a deficient number, since it is larger than the sum of its proper divisors (4389919).

83408081 is a wasteful number, since it uses less digits than its factorization.

83408081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4389918.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 83408081 is about 9132.8024724068. The cubic root of 83408081 is about 436.9207895433.

The spelling of 83408081 in words is "eighty-three million, four hundred eight thousand, eighty-one".