16406269 has 6 divisors (see below), whose sum is σ = 18033470. Its totient is φ = 14914680.

The previous prime is 16406267. The next prime is 16406287. The reversal of 16406269 is 96260461.

It can be written as a sum of positive squares in only one way, i.e., 16297369 + 108900 = 4037^2 + 330^2 .

It is not a de Polignac number, because 16406269 - 2¹ = 16406267 is a prime.

It is a super-2 number, since 2×16406269² = 538331325000722, which contains 22 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 (16406261) 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 5 ways as a sum of consecutive naturals, for example, 67674 + ... + 67915.

Almost surely, 2^16406269 is an apocalyptic number.

It is an amenable number.

16406269 is a deficient number, since it is larger than the sum of its proper divisors (1627201).

16406269 is a wasteful number, since it uses less digits than its factorization.

16406269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135611 (or 135600 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 16406269 is about 4050.4652819152. The cubic root of 16406269 is about 254.0991872940.

The spelling of 16406269 in words is "sixteen million, four hundred six thousand, two hundred sixty-nine".