999967249 has 2 divisors, whose sum is σ = 999967250. Its totient is φ = 999967248.

The previous prime is 999967229. The next prime is 999967273. The reversal of 999967249 is 942769999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 998117649 + 1849600 = 31593^2 + 1360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999967249 is a prime.

It is not a weakly prime, because it can be changed into another prime (999967229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499983624 + 499983625.

It is an arithmetic number, because the mean of its divisors is an integer number (499983625).

Almost surely, 2^999967249 is an apocalyptic number.

It is an amenable number.

999967249 is a deficient number, since it is larger than the sum of its proper divisors (1).

999967249 is an equidigital number, since it uses as much as digits as its factorization.

999967249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19840464, while the sum is 64.

The square root of 999967249 is about 31622.2587586655. The cubic root of 999967249 is about 999.9890828808.

The spelling of 999967249 in words is "nine hundred ninety-nine million, nine hundred sixty-seven thousand, two hundred forty-nine".