430400623 has 4 divisors (see below), whose sum is σ = 430697080. Its totient is φ = 430104168.

The previous prime is 430400609. The next prime is 430400647. The reversal of 430400623 is 326004034.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-430400623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 430400594 and 430400603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (430400653) 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 3 ways as a sum of consecutive naturals, for example, 146040 + ... + 148957.

It is an arithmetic number, because the mean of its divisors is an integer number (107674270).

Almost surely, 2^430400623 is an apocalyptic number.

430400623 is a deficient number, since it is larger than the sum of its proper divisors (296457).

430400623 is a wasteful number, since it uses less digits than its factorization.

430400623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296456.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 430400623 is about 20746.0989827003. The cubic root of 430400623 is about 755.0185648111.

Adding to 430400623 its reverse (326004034), we get a palindrome (756404657).

The spelling of 430400623 in words is "four hundred thirty million, four hundred thousand, six hundred twenty-three".