16992949 has 4 divisors (see below), whose sum is σ = 17008300. Its totient is φ = 16977600.

The previous prime is 16992919. The next prime is 16992959. The reversal of 16992949 is 94929961.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6708100 + 10284849 = 2590^2 + 3207^2 .

It is a cyclic number.

It is not a de Polignac number, because 16992949 - 2¹³ = 16984757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16992919) 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, 5874 + ... + 8275.

It is an arithmetic number, because the mean of its divisors is an integer number (4252075).

Almost surely, 2^16992949 is an apocalyptic number.

It is an amenable number.

16992949 is a deficient number, since it is larger than the sum of its proper divisors (15351).

16992949 is a wasteful number, since it uses less digits than its factorization.

16992949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15350.

The product of its digits is 314928, while the sum is 49.

The square root of 16992949 is about 4122.2504775911. The cubic root of 16992949 is about 257.0926049214.

The spelling of 16992949 in words is "sixteen million, nine hundred ninety-two thousand, nine hundred forty-nine".