769771949 has 2 divisors, whose sum is σ = 769771950. Its totient is φ = 769771948.

The previous prime is 769771913. The next prime is 769771957. The reversal of 769771949 is 949177967.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 701296324 + 68475625 = 26482^2 + 8275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-769771949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (769771549) 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, 384885974 + 384885975.

It is an arithmetic number, because the mean of its divisors is an integer number (384885975).

Almost surely, 2^769771949 is an apocalyptic number.

It is an amenable number.

769771949 is a deficient number, since it is larger than the sum of its proper divisors (1).

769771949 is an equidigital number, since it uses as much as digits as its factorization.

769771949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6001128, while the sum is 59.

The square root of 769771949 is about 27744.7643529369. The cubic root of 769771949 is about 916.4751500430.

The spelling of 769771949 in words is "seven hundred sixty-nine million, seven hundred seventy-one thousand, nine hundred forty-nine".