769420885 has 4 divisors (see below), whose sum is σ = 923305068. Its totient is φ = 615536704.

The previous prime is 769420819. The next prime is 769420889. The reversal of 769420885 is 588024967.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 339812356 + 429608529 = 18434^2 + 20727^2 .

It is a cyclic number.

It is not a de Polignac number, because 769420885 - 2²³ = 761032277 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (769420889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76942084 + ... + 76942093.

It is an arithmetic number, because the mean of its divisors is an integer number (230826267).

Almost surely, 2^769420885 is an apocalyptic number.

It is an amenable number.

769420885 is a deficient number, since it is larger than the sum of its proper divisors (153884183).

769420885 is a wasteful number, since it uses less digits than its factorization.

769420885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153884182.

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 769420885 is about 27738.4369602903. The cubic root of 769420885 is about 916.3358055890.

The spelling of 769420885 in words is "seven hundred sixty-nine million, four hundred twenty thousand, eight hundred eighty-five".