10639849 has 4 divisors (see below), whose sum is σ = 11607120. Its totient is φ = 9672580.

The previous prime is 10639843. The next prime is 10639859. The reversal of 10639849 is 94893601.

10639849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 94893601 = 11 ⋅8626691.

It is a cyclic number.

It is not a de Polignac number, because 10639849 - 2¹⁵ = 10607081 is a prime.

It is a super-2 number, since 2×10639849² = 226412773485602, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) 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 not an unprimeable number, because it can be changed into a prime (10639843) 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, 483619 + ... + 483640.

It is an arithmetic number, because the mean of its divisors is an integer number (2901780).

Almost surely, 2^10639849 is an apocalyptic number.

It is an amenable number.

10639849 is a deficient number, since it is larger than the sum of its proper divisors (967271).

10639849 is an equidigital number, since it uses as much as digits as its factorization.

10639849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967270.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 10639849 is about 3261.8781399678. The cubic root of 10639849 is about 219.9438493062.

The spelling of 10639849 in words is "ten million, six hundred thirty-nine thousand, eight hundred forty-nine".