16000049 has 8 divisors (see below), whose sum is σ = 17301480. Its totient is φ = 14708736.

The previous prime is 15999989. The next prime is 16000057. The reversal of 16000049 is 94000061.

It can be written as a sum of positive squares in 4 ways, for example, as 1123600 + 14876449 = 1060^2 + 3857^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16000049 - 2¹² = 15995953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16000079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 947 + ... + 5735.

It is an arithmetic number, because the mean of its divisors is an integer number (2162685).

Almost surely, 2^16000049 is an apocalyptic number.

It is an amenable number.

16000049 is a deficient number, since it is larger than the sum of its proper divisors (1301431).

16000049 is a wasteful number, since it uses less digits than its factorization.

16000049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5059.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 16000049 is about 4000.0061249953. The cubic root of 16000049 is about 251.9844672126.

It can be divided in two parts, 160000 and 49, that multiplied together give a square (7840000 = 2800²).

The spelling of 16000049 in words is "sixteen million, forty-nine", and thus it is an aban number and an uban number.