40401111 has 8 divisors (see below), whose sum is σ = 54401904. Its totient is φ = 26667200.

The previous prime is 40401103. The next prime is 40401131. The reversal of 40401111 is 11110404.

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 40401111 - 2³ = 40401103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40401131) 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, 66366 + ... + 66971.

It is an arithmetic number, because the mean of its divisors is an integer number (6800238).

Almost surely, 2^40401111 is an apocalyptic number.

40401111 is a deficient number, since it is larger than the sum of its proper divisors (14000793).

40401111 is a wasteful number, since it uses less digits than its factorization.

40401111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133441.

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

The square root of 40401111 is about 6356.1868285946. The cubic root of 40401111 is about 343.1345396666.

Adding to 40401111 its reverse (11110404), we get a palindrome (51511515).

It can be divided in two parts, 4040 and 1111, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 40401111 in words is "forty million, four hundred one thousand, one hundred eleven".