16406441 has 4 divisors (see below), whose sum is σ = 16421712. Its totient is φ = 16391172.

The previous prime is 16406419. The next prime is 16406459. The reversal of 16406441 is 14460461.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14460461 = 401 ⋅36061.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16406441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16406441.

It is not an unprimeable number, because it can be changed into a prime (16406941) 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, 5891 + ... + 8216.

It is an arithmetic number, because the mean of its divisors is an integer number (4105428).

Almost surely, 2^16406441 is an apocalyptic number.

It is an amenable number.

16406441 is a deficient number, since it is larger than the sum of its proper divisors (15271).

16406441 is a wasteful number, since it uses less digits than its factorization.

16406441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15270.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 16406441 is about 4050.4865139882. The cubic root of 16406441 is about 254.1000752657.

It can be divided in two parts, 16 and 406441, that multiplied together give a palindrome (6503056).

The spelling of 16406441 in words is "sixteen million, four hundred six thousand, four hundred forty-one".