400504101 has 16 divisors (see below), whose sum is σ = 543887808. Its totient is φ = 262080000.

The previous prime is 400504033. The next prime is 400504109. The reversal of 400504101 is 101405004.

It is not a de Polignac number, because 400504101 - 2¹⁸ = 400241957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400504109) 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, 98101 + ... + 102101.

It is an arithmetic number, because the mean of its divisors is an integer number (33992988).

Almost surely, 2^400504101 is an apocalyptic number.

It is an amenable number.

400504101 is a deficient number, since it is larger than the sum of its proper divisors (143383707).

400504101 is a wasteful number, since it uses less digits than its factorization.

400504101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4612.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 400504101 is about 20012.5985569091. The cubic root of 400504101 is about 737.1156904547.

Adding to 400504101 its reverse (101405004), we get a palindrome (501909105).

The spelling of 400504101 in words is "four hundred million, five hundred four thousand, one hundred one".