16940929 has 4 divisors (see below), whose sum is σ = 16952320. Its totient is φ = 16929540.

The previous prime is 16940923. The next prime is 16940933. The reversal of 16940929 is 92904961.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 92904961 = 4831 ⋅19231.

It is a cyclic number.

It is not a de Polignac number, because 16940929 - 2⁵ = 16940897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16940891 and 16940900.

It is not an unprimeable number, because it can be changed into a prime (16940923) 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, 3057 + ... + 6574.

It is an arithmetic number, because the mean of its divisors is an integer number (4238080).

Almost surely, 2^16940929 is an apocalyptic number.

It is an amenable number.

16940929 is a deficient number, since it is larger than the sum of its proper divisors (11391).

16940929 is an equidigital number, since it uses as much as digits as its factorization.

16940929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11390.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 16940929 is about 4115.9359810376. The cubic root of 16940929 is about 256.8299934963.

The spelling of 16940929 in words is "sixteen million, nine hundred forty thousand, nine hundred twenty-nine".