999694093 has 2 divisors, whose sum is σ = 999694094. Its totient is φ = 999694092.

The previous prime is 999694039. The next prime is 999694099. The reversal of 999694093 is 390496999.

Together with previous prime (999694039) 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., 926471844 + 73222249 = 30438^2 + 8557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999694093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999694099) 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, 499847046 + 499847047.

It is an arithmetic number, because the mean of its divisors is an integer number (499847047).

Almost surely, 2^999694093 is an apocalyptic number.

It is an amenable number.

999694093 is a deficient number, since it is larger than the sum of its proper divisors (1).

999694093 is an equidigital number, since it uses as much as digits as its factorization.

999694093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4251528, while the sum is 58.

The square root of 999694093 is about 31617.9394173624. The cubic root of 999694093 is about 999.8980206006.

The spelling of 999694093 in words is "nine hundred ninety-nine million, six hundred ninety-four thousand, ninety-three".