406448169 has 8 divisors (see below), whose sum is σ = 554534112. Its totient is φ = 264663840.

The previous prime is 406448153. The next prime is 406448177. The reversal of 406448169 is 961844604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 406448169 - 2⁴ = 406448153 is a prime.

It is a super-2 number, since 2×406448169² = 330400228166905122, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 406448169.

It is not an unprimeable number, because it can be changed into a prime (406448179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1575252 + ... + 1575509.

It is an arithmetic number, because the mean of its divisors is an integer number (69316764).

Almost surely, 2^406448169 is an apocalyptic number.

It is an amenable number.

406448169 is a deficient number, since it is larger than the sum of its proper divisors (148085943).

406448169 is a wasteful number, since it uses less digits than its factorization.

406448169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3150807.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 406448169 is about 20160.5597392533. The cubic root of 406448169 is about 740.7444231430.

The spelling of 406448169 in words is "four hundred six million, four hundred forty-eight thousand, one hundred sixty-nine".