400430135 has 16 divisors (see below), whose sum is σ = 555336000. Its totient is φ = 271493376.

The previous prime is 400430119. The next prime is 400430137. The reversal of 400430135 is 531034004.

It is not a de Polignac number, because 400430135 - 2⁴ = 400430119 is a prime.

It is a super-2 number, since 2×400430135² = 320688586032236450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400430137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61160 + ... + 67389.

It is an arithmetic number, because the mean of its divisors is an integer number (34708500).

Almost surely, 2^400430135 is an apocalyptic number.

400430135 is a deficient number, since it is larger than the sum of its proper divisors (154905865).

400430135 is a wasteful number, since it uses less digits than its factorization.

400430135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128650.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 400430135 is about 20010.7504856764. The cubic root of 400430135 is about 737.0703102653.

Adding to 400430135 its reverse (531034004), we get a palindrome (931464139).

The spelling of 400430135 in words is "four hundred million, four hundred thirty thousand, one hundred thirty-five".