83377891 has 2 divisors, whose sum is σ = 83377892. Its totient is φ = 83377890.

The previous prime is 83377873. The next prime is 83377901. The reversal of 83377891 is 19877338.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83377891 - 2¹¹ = 83375843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83371891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41688945 + 41688946.

It is an arithmetic number, because the mean of its divisors is an integer number (41688946).

Almost surely, 2^83377891 is an apocalyptic number.

83377891 is a deficient number, since it is larger than the sum of its proper divisors (1).

83377891 is an equidigital number, since it uses as much as digits as its factorization.

83377891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 83377891 is about 9131.1494895221. The cubic root of 83377891 is about 436.8680679114.

The spelling of 83377891 in words is "eighty-three million, three hundred seventy-seven thousand, eight hundred ninety-one".