999994903 has 2 divisors, whose sum is σ = 999994904. Its totient is φ = 999994902.

The previous prime is 999994883. The next prime is 999994913. The reversal of 999994903 is 309499999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999994903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999994913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499997451 + 499997452.

It is an arithmetic number, because the mean of its divisors is an integer number (499997452).

Almost surely, 2^999994903 is an apocalyptic number.

999994903 is a deficient number, since it is larger than the sum of its proper divisors (1).

999994903 is an equidigital number, since it uses as much as digits as its factorization.

999994903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6377292, while the sum is 61.

The square root of 999994903 is about 31622.6960109349. The cubic root of 999994903 is about 999.9983009971.

The spelling of 999994903 in words is "nine hundred ninety-nine million, nine hundred ninety-four thousand, nine hundred three".