999954973 has 2 divisors, whose sum is σ = 999954974. Its totient is φ = 999954972.

The previous prime is 999954937. The next prime is 999954979. The reversal of 999954973 is 379459999.

Together with previous prime (999954937) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 999697924 + 257049 = 31618^2 + 507^2 .

It is a cyclic number.

It is not a de Polignac number, because 999954973 - 2¹⁷ = 999823901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999954979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499977486 + 499977487.

It is an arithmetic number, because the mean of its divisors is an integer number (499977487).

Almost surely, 2^999954973 is an apocalyptic number.

It is an amenable number.

999954973 is a deficient number, since it is larger than the sum of its proper divisors (1).

999954973 is an equidigital number, since it uses as much as digits as its factorization.

999954973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24800580, while the sum is 64.

The square root of 999954973 is about 31622.0646542885. The cubic root of 999954973 is about 999.9849907747.

The spelling of 999954973 in words is "nine hundred ninety-nine million, nine hundred fifty-four thousand, nine hundred seventy-three".