400436165 has 8 divisors (see below), whose sum is σ = 480687648. Its totient is φ = 320239440.

The previous prime is 400436149. The next prime is 400436189. The reversal of 400436165 is 561634004.

It is a happy number.

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

It is not a de Polignac number, because 400436165 - 2⁴ = 400436149 is a prime.

It is a Duffinian number.

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, 4634 + ... + 28676.

It is an arithmetic number, because the mean of its divisors is an integer number (60085956).

Almost surely, 2^400436165 is an apocalyptic number.

It is an amenable number.

400436165 is a deficient number, since it is larger than the sum of its proper divisors (80251483).

400436165 is a wasteful number, since it uses less digits than its factorization.

400436165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27379.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 400436165 is about 20010.9011541210. The cubic root of 400436165 is about 737.0740100465.

The spelling of 400436165 in words is "four hundred million, four hundred thirty-six thousand, one hundred sixty-five".