283493891 has 2 divisors, whose sum is σ = 283493892. Its totient is φ = 283493890.

The previous prime is 283493867. The next prime is 283493897. The reversal of 283493891 is 198394382.

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-283493891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (283493897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141746945 + 141746946.

It is an arithmetic number, because the mean of its divisors is an integer number (141746946).

Almost surely, 2^283493891 is an apocalyptic number.

283493891 is a deficient number, since it is larger than the sum of its proper divisors (1).

283493891 is an equidigital number, since it uses as much as digits as its factorization.

283493891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The square root of 283493891 is about 16837.2768285136. The cubic root of 283493891 is about 656.9231523457.

The spelling of 283493891 in words is "two hundred eighty-three million, four hundred ninety-three thousand, eight hundred ninety-one".