400041111 has 16 divisors (see below), whose sum is σ = 553678848. Its totient is φ = 256735200.

The previous prime is 400041107. The next prime is 400041113. The reversal of 400041111 is 111140004.

It is not a de Polignac number, because 400041111 - 2² = 400041107 is a prime.

It is a super-2 number, since 2×400041111² = 320065780980228642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400041113) 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, 14655 + ... + 31856.

It is an arithmetic number, because the mean of its divisors is an integer number (34604928).

Almost surely, 2^400041111 is an apocalyptic number.

400041111 is a deficient number, since it is larger than the sum of its proper divisors (153637737).

400041111 is a wasteful number, since it uses less digits than its factorization.

400041111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46622.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 400041111 is about 20001.0277485933. The cubic root of 400041111 is about 736.8315412332.

Adding to 400041111 its reverse (111140004), we get a palindrome (511181115).

It can be divided in two parts, 40004 and 1111, that multiplied together give a palindrome (44444444).

The spelling of 400041111 in words is "four hundred million, forty-one thousand, one hundred eleven".