16427963 has 4 divisors (see below), whose sum is σ = 16872000. Its totient is φ = 15983928.

The previous prime is 16427897. The next prime is 16427981. The reversal of 16427963 is 36972461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36972461 = 19 ⋅1945919.

It is a cyclic number.

It is not a de Polignac number, because 16427963 - 2¹⁰ = 16426939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16421963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221963 + ... + 222036.

It is an arithmetic number, because the mean of its divisors is an integer number (4218000).

Almost surely, 2^16427963 is an apocalyptic number.

16427963 is a deficient number, since it is larger than the sum of its proper divisors (444037).

16427963 is an equidigital number, since it uses as much as digits as its factorization.

16427963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444036.

The product of its digits is 54432, while the sum is 38.

The square root of 16427963 is about 4053.1423611810. The cubic root of 16427963 is about 254.2111363678.

The spelling of 16427963 in words is "sixteen million, four hundred twenty-seven thousand, nine hundred sixty-three".