869646393 has 48 divisors (see below), whose sum is σ = 1576288896. Its totient is φ = 448830720.

The previous prime is 869646389. The next prime is 869646467. The reversal of 869646393 is 393646968.

It is a happy number.

869646393 is a `hidden beast` number, since 8 + 6 + 96 + 463 + 93 = 666.

869646393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 869646393 - 2² = 869646389 is a prime.

It is not an unprimeable number, because it can be changed into a prime (869646383) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 104805 + ... + 112797.

It is an arithmetic number, because the mean of its divisors is an integer number (32839352).

Almost surely, 2^869646393 is an apocalyptic number.

It is an amenable number.

869646393 is a deficient number, since it is larger than the sum of its proper divisors (706642503).

869646393 is a wasteful number, since it uses less digits than its factorization.

869646393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8174 (or 8171 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 54.

The square root of 869646393 is about 29489.7675982704. The cubic root of 869646393 is about 954.5109172093.

The spelling of 869646393 in words is "eight hundred sixty-nine million, six hundred forty-six thousand, three hundred ninety-three".