16959961 has 4 divisors (see below), whose sum is σ = 17093632. Its totient is φ = 16826292.

The previous prime is 16959959. The next prime is 16959979. The reversal of 16959961 is 16995961.

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.

It is a cyclic number.

It is not a de Polignac number, because 16959961 - 2¹ = 16959959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16959991) 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, 66645 + ... + 66898.

It is an arithmetic number, because the mean of its divisors is an integer number (4273408).

Almost surely, 2^16959961 is an apocalyptic number.

It is an amenable number.

16959961 is a deficient number, since it is larger than the sum of its proper divisors (133671).

16959961 is a wasteful number, since it uses less digits than its factorization.

16959961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133670.

The product of its digits is 131220, while the sum is 46.

The square root of 16959961 is about 4118.2473213735. The cubic root of 16959961 is about 256.9261346059.

The spelling of 16959961 in words is "sixteen million, nine hundred fifty-nine thousand, nine hundred sixty-one".