769433638 has 8 divisors (see below), whose sum is σ = 1158258600. Its totient is φ = 383347440.

The previous prime is 769433627. The next prime is 769433647. The reversal of 769433638 is 836334967.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 769433591 and 769433600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 683988 + ... + 685111.

It is an arithmetic number, because the mean of its divisors is an integer number (144782325).

Almost surely, 2^769433638 is an apocalyptic number.

769433638 is a deficient number, since it is larger than the sum of its proper divisors (388824962).

769433638 is a wasteful number, since it uses less digits than its factorization.

769433638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369382.

The product of its digits is 1959552, while the sum is 49.

The square root of 769433638 is about 27738.6668389092. Note that the first 3 decimals coincide. The cubic root of 769433638 is about 916.3408682563.

The spelling of 769433638 in words is "seven hundred sixty-nine million, four hundred thirty-three thousand, six hundred thirty-eight".