16440871 has 8 divisors (see below), whose sum is σ = 17470080. Its totient is φ = 15428088.

The previous prime is 16440869. The next prime is 16440899. The reversal of 16440871 is 17804461.

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 16440871 - 2¹ = 16440869 is a prime.

It is a super-3 number, since 3×16440871³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16440811) 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, 2011 + ... + 6076.

It is an arithmetic number, because the mean of its divisors is an integer number (2183760).

Almost surely, 2^16440871 is an apocalyptic number.

16440871 is a deficient number, since it is larger than the sum of its proper divisors (1029209).

16440871 is a wasteful number, since it uses less digits than its factorization.

16440871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8213.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 16440871 is about 4054.7343932741. The cubic root of 16440871 is about 254.2776996680.

The spelling of 16440871 in words is "sixteen million, four hundred forty thousand, eight hundred seventy-one".