999348949 has 2 divisors, whose sum is σ = 999348950. Its totient is φ = 999348948.

The previous prime is 999348937. The next prime is 999348983. The reversal of 999348949 is 949843999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 674700625 + 324648324 = 25975^2 + 18018^2 .

It is a cyclic number.

It is not a de Polignac number, because 999348949 - 2⁷ = 999348821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999348929) 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, 499674474 + 499674475.

It is an arithmetic number, because the mean of its divisors is an integer number (499674475).

Almost surely, 2^999348949 is an apocalyptic number.

It is an amenable number.

999348949 is a deficient number, since it is larger than the sum of its proper divisors (1).

999348949 is an equidigital number, since it uses as much as digits as its factorization.

999348949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22674816, while the sum is 64.

The square root of 999348949 is about 31612.4809054905. The cubic root of 999348949 is about 999.7829358866.

The spelling of 999348949 in words is "nine hundred ninety-nine million, three hundred forty-eight thousand, nine hundred forty-nine".