164400446 has 16 divisors (see below), whose sum is σ = 286037376. Its totient is φ = 69405336.

The previous prime is 164400419. The next prime is 164400461. The reversal of 164400446 is 644004461.

It is a super-3 number, since 3×164400446³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86696 + ... + 88571.

It is an arithmetic number, because the mean of its divisors is an integer number (17877336).

Almost surely, 2^164400446 is an apocalyptic number.

164400446 is a deficient number, since it is larger than the sum of its proper divisors (121636930).

164400446 is a wasteful number, since it uses less digits than its factorization.

164400446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175343.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 164400446 is about 12821.8737320253. The cubic root of 164400446 is about 547.8155181140.

The spelling of 164400446 in words is "one hundred sixty-four million, four hundred thousand, four hundred forty-six".