401404415 has 8 divisors (see below), whose sum is σ = 483000000. Its totient is φ = 320247072.

The previous prime is 401404397. The next prime is 401404417. The reversal of 401404415 is 514404104.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401404415 is a prime.

It is a super-2 number, since 2×401404415² = 322251008762984450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401404417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107540 + ... + 111209.

It is an arithmetic number, because the mean of its divisors is an integer number (60375000).

Almost surely, 2^401404415 is an apocalyptic number.

401404415 is a deficient number, since it is larger than the sum of its proper divisors (81595585).

401404415 is a wasteful number, since it uses less digits than its factorization.

401404415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219121.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 401404415 is about 20035.0796105231. The cubic root of 401404415 is about 737.6676106644.

Adding to 401404415 its reverse (514404104), we get a palindrome (915808519).

The spelling of 401404415 in words is "four hundred one million, four hundred four thousand, four hundred fifteen".