401435165 has 4 divisors (see below), whose sum is σ = 481722204. Its totient is φ = 321148128.

The previous prime is 401435147. The next prime is 401435171. The reversal of 401435165 is 561534104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75307684 + 326127481 = 8678^2 + 18059^2 .

It is a cyclic number.

It is not a de Polignac number, because 401435165 - 2¹⁴ = 401418781 is a prime.

It is a super-2 number, since 2×401435165² = 322300383397154450, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 40143512 + ... + 40143521.

It is an arithmetic number, because the mean of its divisors is an integer number (120430551).

Almost surely, 2^401435165 is an apocalyptic number.

It is an amenable number.

401435165 is a deficient number, since it is larger than the sum of its proper divisors (80287039).

401435165 is an equidigital number, since it uses as much as digits as its factorization.

401435165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80287038.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 401435165 is about 20035.8469998151. The cubic root of 401435165 is about 737.6864467799.

Adding to 401435165 its reverse (561534104), we get a palindrome (962969269).

The spelling of 401435165 in words is "four hundred one million, four hundred thirty-five thousand, one hundred sixty-five".