833979491 has 2 divisors, whose sum is σ = 833979492. Its totient is φ = 833979490.

The previous prime is 833979473. The next prime is 833979499. The reversal of 833979491 is 194979338.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-833979491 is a prime.

It is not a weakly prime, because it can be changed into another prime (833979499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 416989745 + 416989746.

It is an arithmetic number, because the mean of its divisors is an integer number (416989746).

Almost surely, 2^833979491 is an apocalyptic number.

833979491 is a deficient number, since it is larger than the sum of its proper divisors (1).

833979491 is an equidigital number, since it uses as much as digits as its factorization.

833979491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 53.

The square root of 833979491 is about 28878.7030699095. The cubic root of 833979491 is about 941.2791891018.

The spelling of 833979491 in words is "eight hundred thirty-three million, nine hundred seventy-nine thousand, four hundred ninety-one".