400404011 has 8 divisors (see below), whose sum is σ = 457743840. Its totient is φ = 343099008.

The previous prime is 400404007. The next prime is 400404013. The reversal of 400404011 is 110404004.

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

It is not a de Polignac number, because 400404011 - 2² = 400404007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400404013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24275 + ... + 37283.

It is an arithmetic number, because the mean of its divisors is an integer number (57217980).

Almost surely, 2^400404011 is an apocalyptic number.

400404011 is a deficient number, since it is larger than the sum of its proper divisors (57339829).

400404011 is a wasteful number, since it uses less digits than its factorization.

400404011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17413.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 400404011 is about 20010.0977258983. The cubic root of 400404011 is about 737.0542811324.

Adding to 400404011 its reverse (110404004), we get a palindrome (510808015).

The spelling of 400404011 in words is "four hundred million, four hundred four thousand, eleven".