16789949 has 12 divisors (see below), whose sum is σ = 18682560. Its totient is φ = 14961960.

The previous prime is 16789933. The next prime is 16789963. The reversal of 16789949 is 94998761.

It is a happy number.

It is not a de Polignac number, because 16789949 - 2⁴ = 16789933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16789949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16789919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120722 + ... + 120860.

It is an arithmetic number, because the mean of its divisors is an integer number (1556880).

Almost surely, 2^16789949 is an apocalyptic number.

It is an amenable number.

16789949 is a deficient number, since it is larger than the sum of its proper divisors (1892611).

16789949 is an equidigital number, since it uses as much as digits as its factorization.

16789949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 229 counting only the distinct ones).

The product of its digits is 979776, while the sum is 53.

The square root of 16789949 is about 4097.5540264895. The cubic root of 16789949 is about 256.0647470100.

The spelling of 16789949 in words is "sixteen million, seven hundred eighty-nine thousand, nine hundred forty-nine".