16229861 has 4 divisors (see below), whose sum is σ = 16252224. Its totient is φ = 16207500.

The previous prime is 16229803. The next prime is 16229869. The reversal of 16229861 is 16892261.

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 16229861 - 2⁶ = 16229797 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 (16229869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10055 + ... + 11556.

It is an arithmetic number, because the mean of its divisors is an integer number (4063056).

Almost surely, 2^16229861 is an apocalyptic number.

It is an amenable number.

16229861 is a deficient number, since it is larger than the sum of its proper divisors (22363).

16229861 is an equidigital number, since it uses as much as digits as its factorization.

16229861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22362.

The product of its digits is 10368, while the sum is 35.

The square root of 16229861 is about 4028.6301642121. The cubic root of 16229861 is about 253.1851717135.

The spelling of 16229861 in words is "sixteen million, two hundred twenty-nine thousand, eight hundred sixty-one".