400430315 has 4 divisors (see below), whose sum is σ = 480516384. Its totient is φ = 320344248.

The previous prime is 400430293. The next prime is 400430321. The reversal of 400430315 is 513034004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400430315 - 2¹⁰ = 400429291 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40043027 + ... + 40043036.

It is an arithmetic number, because the mean of its divisors is an integer number (120129096).

Almost surely, 2^400430315 is an apocalyptic number.

400430315 is a deficient number, since it is larger than the sum of its proper divisors (80086069).

400430315 is an equidigital number, since it uses as much as digits as its factorization.

400430315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80086068.

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

The square root of 400430315 is about 20010.7549832584. The cubic root of 400430315 is about 737.0704207071.

Adding to 400430315 its reverse (513034004), we get a palindrome (913464319).

The spelling of 400430315 in words is "four hundred million, four hundred thirty thousand, three hundred fifteen".