401449165 has 16 divisors (see below), whose sum is σ = 525369600. Its totient is φ = 292698432.

The previous prime is 401449151. The next prime is 401449219. The reversal of 401449165 is 561944104.

It is a happy number.

It is not a de Polignac number, because 401449165 - 2⁵ = 401449133 is a prime.

It is a super-2 number, since 2×401449165² = 322322864158394450, 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 401449165.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 33955 + ... + 44224.

It is an arithmetic number, because the mean of its divisors is an integer number (32835600).

Almost surely, 2^401449165 is an apocalyptic number.

It is an amenable number.

401449165 is a deficient number, since it is larger than the sum of its proper divisors (123920435).

401449165 is a wasteful number, since it uses less digits than its factorization.

401449165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78276.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 401449165 is about 20036.1963705689. The cubic root of 401449165 is about 737.6950222537.

The spelling of 401449165 in words is "four hundred one million, four hundred forty-nine thousand, one hundred sixty-five".