10639869 has 16 divisors (see below), whose sum is σ = 15168384. Its totient is φ = 6617600.

The previous prime is 10639859. The next prime is 10639873. The reversal of 10639869 is 96893601.

It is a cyclic number.

It is not a de Polignac number, because 10639869 - 2⁸ = 10639613 is a prime.

It is a super-2 number, since 2×10639869² = 226413624674322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10639869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10639819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 949 + ... + 4709.

It is an arithmetic number, because the mean of its divisors is an integer number (948024).

Almost surely, 2^10639869 is an apocalyptic number.

It is an amenable number.

10639869 is a deficient number, since it is larger than the sum of its proper divisors (4528515).

10639869 is a wasteful number, since it uses less digits than its factorization.

10639869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3828.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 10639869 is about 3261.8812056848. The cubic root of 10639869 is about 219.9439871175.

The spelling of 10639869 in words is "ten million, six hundred thirty-nine thousand, eight hundred sixty-nine".