400020411 has 16 divisors (see below), whose sum is σ = 610380288. Its totient is φ = 228273600.

The previous prime is 400020407. The next prime is 400020427. The reversal of 400020411 is 114020004.

It is not a de Polignac number, because 400020411 - 2² = 400020407 is a prime.

It is a super-3 number, since 3×400020411³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (400021411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3466 + ... + 28496.

It is an arithmetic number, because the mean of its divisors is an integer number (38148768).

Almost surely, 2^400020411 is an apocalyptic number.

400020411 is a deficient number, since it is larger than the sum of its proper divisors (210359877).

400020411 is a wasteful number, since it uses less digits than its factorization.

400020411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25802.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 400020411 is about 20000.5102684907. The cubic root of 400020411 is about 736.8188319761.

Adding to 400020411 its reverse (114020004), we get a palindrome (514040415).

The spelling of 400020411 in words is "four hundred million, twenty thousand, four hundred eleven".