10856839 has 8 divisors (see below), whose sum is σ = 12499488. Its totient is φ = 9237120.

The previous prime is 10856831. The next prime is 10856861. The reversal of 10856839 is 93865801.

It is a happy number.

10856839 is digitally balanced in base 2, base 3 and base 8, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 10856839 - 2³ = 10856831 is a prime.

It is a Duffinian number.

10856839 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10856831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4702 + ... + 6619.

It is an arithmetic number, because the mean of its divisors is an integer number (1562436).

Almost surely, 2^10856839 is an apocalyptic number.

10856839 is a deficient number, since it is larger than the sum of its proper divisors (1642649).

10856839 is a wasteful number, since it uses less digits than its factorization.

10856839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11465.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 10856839 is about 3294.9717752964. The cubic root of 10856839 is about 221.4289832409.

The spelling of 10856839 in words is "ten million, eight hundred fifty-six thousand, eight hundred thirty-nine".