10999939 has 4 divisors (see below), whose sum is σ = 11084040. Its totient is φ = 10915840.

The previous prime is 10999871. The next prime is 10999949. The reversal of 10999939 is 93999901.

10999939 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 an emirpimes, since its reverse is a distinct semiprime: 93999901 = 1033 ⋅90997.

It is a cyclic number.

It is not a de Polignac number, because 10999939 - 2⁷ = 10999811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10999892 and 10999901.

It is not an unprimeable number, because it can be changed into a prime (10999949) 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, 41854 + ... + 42115.

It is an arithmetic number, because the mean of its divisors is an integer number (2771010).

Almost surely, 2^10999939 is an apocalyptic number.

10999939 is a deficient number, since it is larger than the sum of its proper divisors (84101).

10999939 is an equidigital number, since it uses as much as digits as its factorization.

10999939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84100.

The product of its (nonzero) digits is 177147, while the sum is 49.

The square root of 10999939 is about 3316.6155942466. The cubic root of 10999939 is about 222.3975979568.

The spelling of 10999939 in words is "ten million, nine hundred ninety-nine thousand, nine hundred thirty-nine".