40400011 has 2 divisors, whose sum is σ = 40400012. Its totient is φ = 40400010.

The previous prime is 40399981. The next prime is 40400021. The reversal of 40400011 is 11000404.

It is an a-pointer prime, because the next prime (40400021) can be obtained adding 40400011 to its sum of digits (10).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40400011 - 2⁵ = 40399979 is a prime.

It is not a weakly prime, because it can be changed into another prime (40400021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20200005 + 20200006.

It is an arithmetic number, because the mean of its divisors is an integer number (20200006).

Almost surely, 2^40400011 is an apocalyptic number.

40400011 is a deficient number, since it is larger than the sum of its proper divisors (1).

40400011 is an equidigital number, since it uses as much as digits as its factorization.

40400011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 40400011 is about 6356.1002981388. The cubic root of 40400011 is about 343.1314254666.

Adding to 40400011 its reverse (11000404), we get a palindrome (51400415).

The spelling of 40400011 in words is "forty million, four hundred thousand, eleven".