1984422997 has 2 divisors, whose sum is σ = 1984422998. Its totient is φ = 1984422996.

The previous prime is 1984422941. The next prime is 1984423019. The reversal of 1984422997 is 7992244891.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1151177041 + 833245956 = 33929^2 + 28866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1984422997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1984422917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992211498 + 992211499.

It is an arithmetic number, because the mean of its divisors is an integer number (992211499).

Almost surely, 2^1984422997 is an apocalyptic number.

It is an amenable number.

1984422997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1984422997 is an equidigital number, since it uses as much as digits as its factorization.

1984422997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 55.

The square root of 1984422997 is about 44546.8629310752. The cubic root of 1984422997 is about 1256.6415553227.

The spelling of 1984422997 in words is "one billion, nine hundred eighty-four million, four hundred twenty-two thousand, nine hundred ninety-seven".