10649839 has 4 divisors (see below), whose sum is σ = 10733824. Its totient is φ = 10565856.

The previous prime is 10649827. The next prime is 10649843. The reversal of 10649839 is 93894601.

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

It is a cyclic number.

It is not a de Polignac number, because 10649839 - 2⁷ = 10649711 is a prime.

It is a super-2 number, since 2×10649839² = 226838141451842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10649869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41802 + ... + 42055.

It is an arithmetic number, because the mean of its divisors is an integer number (2683456).

Almost surely, 2^10649839 is an apocalyptic number.

10649839 is a deficient number, since it is larger than the sum of its proper divisors (83985).

10649839 is an equidigital number, since it uses as much as digits as its factorization.

10649839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83984.

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

The square root of 10649839 is about 3263.4091070535. The cubic root of 10649839 is about 220.0126645602.

The spelling of 10649839 in words is "ten million, six hundred forty-nine thousand, eight hundred thirty-nine".