983400191 has 2 divisors, whose sum is σ = 983400192. Its totient is φ = 983400190.

The previous prime is 983400181. The next prime is 983400199. The reversal of 983400191 is 191004389.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-983400191 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (983400199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491700095 + 491700096.

It is an arithmetic number, because the mean of its divisors is an integer number (491700096).

Almost surely, 2^983400191 is an apocalyptic number.

983400191 is a deficient number, since it is larger than the sum of its proper divisors (1).

983400191 is an equidigital number, since it uses as much as digits as its factorization.

983400191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 983400191 is about 31359.2122190593. The cubic root of 983400191 is about 994.4358277427.

The spelling of 983400191 in words is "nine hundred eighty-three million, four hundred thousand, one hundred ninety-one".