401534215 has 8 divisors (see below), whose sum is σ = 493046928. Its totient is φ = 313756800.

The previous prime is 401534209. The next prime is 401534219. The reversal of 401534215 is 512435104.

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 401534215 - 2⁵ = 401534183 is a prime.

It is a super-2 number, since 2×401534215² = 322459451631332450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401534215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401534219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 933586 + ... + 934015.

It is an arithmetic number, because the mean of its divisors is an integer number (61630866).

Almost surely, 2^401534215 is an apocalyptic number.

401534215 is a deficient number, since it is larger than the sum of its proper divisors (91512713).

401534215 is a wasteful number, since it uses less digits than its factorization.

401534215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867649.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 401534215 is about 20038.3186669940. The cubic root of 401534215 is about 737.7471139729.

Adding to 401534215 its reverse (512435104), we get a palindrome (913969319).

The spelling of 401534215 in words is "four hundred one million, five hundred thirty-four thousand, two hundred fifteen".