949218769 has 2 divisors, whose sum is σ = 949218770. Its totient is φ = 949218768.

The previous prime is 949218719. The next prime is 949218779. The reversal of 949218769 is 967812949.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 826275025 + 122943744 = 28745^2 + 11088^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-949218769 is a prime.

It is a super-2 number, since 2×949218769² = 1802032542843750722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (949218719) 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, 474609384 + 474609385.

It is an arithmetic number, because the mean of its divisors is an integer number (474609385).

Almost surely, 2^949218769 is an apocalyptic number.

It is an amenable number.

949218769 is a deficient number, since it is larger than the sum of its proper divisors (1).

949218769 is an equidigital number, since it uses as much as digits as its factorization.

949218769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 55.

The square root of 949218769 is about 30809.3941680131. The cubic root of 949218769 is about 982.7780293856.

The spelling of 949218769 in words is "nine hundred forty-nine million, two hundred eighteen thousand, seven hundred sixty-nine".