169444406 has 8 divisors (see below), whose sum is σ = 269117640. Its totient is φ = 79738528.

The previous prime is 169444403. The next prime is 169444409. The reversal of 169444406 is 604444961.

It is an interprime number because it is at equal distance from previous prime (169444403) and next prime (169444409).

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

It is a super-2 number, since 2×169444406² = 57422813449385672, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 169444406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169444403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2491796 + ... + 2491863.

It is an arithmetic number, because the mean of its divisors is an integer number (33639705).

Almost surely, 2^169444406 is an apocalyptic number.

169444406 is a deficient number, since it is larger than the sum of its proper divisors (99673234).

169444406 is a wasteful number, since it uses less digits than its factorization.

169444406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4983678.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 169444406 is about 13017.0813164857. The cubic root of 169444406 is about 553.3616766662.

The spelling of 169444406 in words is "one hundred sixty-nine million, four hundred forty-four thousand, four hundred six".