400136111 has 8 divisors (see below), whose sum is σ = 405612144. Its totient is φ = 394675840.

The previous prime is 400136081. The next prime is 400136117. The reversal of 400136111 is 111631004.

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

It is a cyclic number.

It is not a de Polignac number, because 400136111 - 2⁶ = 400136047 is a prime.

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 400136111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400136117) 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, 52631 + ... + 59751.

It is an arithmetic number, because the mean of its divisors is an integer number (50701518).

Almost surely, 2^400136111 is an apocalyptic number.

400136111 is a deficient number, since it is larger than the sum of its proper divisors (5476033).

400136111 is an equidigital number, since it uses as much as digits as its factorization.

400136111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7881.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 400136111 is about 20003.4024855773. The cubic root of 400136111 is about 736.8898631191.

Adding to 400136111 its reverse (111631004), we get a palindrome (511767115).

The spelling of 400136111 in words is "four hundred million, one hundred thirty-six thousand, one hundred eleven".