400006411 has 12 divisors (see below), whose sum is σ = 482480112. Its totient is φ = 324815184.

The previous prime is 400006393. The next prime is 400006421. The reversal of 400006411 is 114600004.

It is a happy number.

It is not a de Polignac number, because 400006411 - 2⁷ = 400006283 is a prime.

It is a super-2 number, since 2×400006411² = 320010257682201842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400006421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76620 + ... + 81673.

It is an arithmetic number, because the mean of its divisors is an integer number (40206676).

Almost surely, 2^400006411 is an apocalyptic number.

400006411 is a deficient number, since it is larger than the sum of its proper divisors (82473701).

400006411 is a wasteful number, since it uses less digits than its factorization.

400006411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158338 (or 158319 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 400006411 is about 20000.1602743578. The cubic root of 400006411 is about 736.8102360947.

Adding to 400006411 its reverse (114600004), we get a palindrome (514606415).

The spelling of 400006411 in words is "four hundred million, six thousand, four hundred eleven".