769420849 has 4 divisors (see below), whose sum is σ = 769844736. Its totient is φ = 768996964.

The previous prime is 769420819. The next prime is 769420889. The reversal of 769420849 is 948024967.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 948024967 = 181 ⋅5237707.

It is a cyclic number.

It is not a de Polignac number, because 769420849 - 2¹¹ = 769418801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (769420819) 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 in 3 ways as a sum of consecutive naturals, for example, 209209 + ... + 212854.

It is an arithmetic number, because the mean of its divisors is an integer number (192461184).

Almost surely, 2^769420849 is an apocalyptic number.

It is an amenable number.

769420849 is a deficient number, since it is larger than the sum of its proper divisors (423887).

769420849 is a wasteful number, since it uses less digits than its factorization.

769420849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423886.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 769420849 is about 27738.4363113713. The cubic root of 769420849 is about 916.3357912977.

The spelling of 769420849 in words is "seven hundred sixty-nine million, four hundred twenty thousand, eight hundred forty-nine".