401445402 has 8 divisors (see below), whose sum is σ = 802890816. Its totient is φ = 133815132.

The previous prime is 401445397. The next prime is 401445403. The reversal of 401445402 is 204544104.

It is a happy number.

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

401445402 is an admirable number.

It is a super-2 number, since 2×401445402² = 322316821573883208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401445403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33453778 + ... + 33453789.

It is an arithmetic number, because the mean of its divisors is an integer number (100361352).

Almost surely, 2^401445402 is an apocalyptic number.

401445402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401445402 is a wasteful number, since it uses less digits than its factorization.

401445402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66907572.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 401445402 is about 20036.1024653000. The cubic root of 401445402 is about 737.6927173085.

Adding to 401445402 its reverse (204544104), we get a palindrome (605989506).

The spelling of 401445402 in words is "four hundred one million, four hundred forty-five thousand, four hundred two".