400030401 has 16 divisors (see below), whose sum is σ = 548978688. Its totient is φ = 258997200.

The previous prime is 400030391. The next prime is 400030403. The reversal of 400030401 is 104030004.

It is not a de Polignac number, because 400030401 - 2¹¹ = 400028353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400030403) 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 15 ways as a sum of consecutive naturals, for example, 256 + ... + 28286.

It is an arithmetic number, because the mean of its divisors is an integer number (34311168).

Almost surely, 2^400030401 is an apocalyptic number.

It is an amenable number.

400030401 is a deficient number, since it is larger than the sum of its proper divisors (148948287).

400030401 is a wasteful number, since it uses less digits than its factorization.

400030401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28172.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 400030401 is about 20000.7600105596. The cubic root of 400030401 is about 736.8249656288.

Adding to 400030401 its reverse (104030004), we get a palindrome (504060405).

The spelling of 400030401 in words is "four hundred million, thirty thousand, four hundred one".