424644403 has 4 divisors (see below), whose sum is σ = 424778040. Its totient is φ = 424510768.

The previous prime is 424644347. The next prime is 424644457. The reversal of 424644403 is 304446424.

It is a happy number.

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-424644403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424642403) 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, 61933 + ... + 68446.

It is an arithmetic number, because the mean of its divisors is an integer number (106194510).

Almost surely, 2^424644403 is an apocalyptic number.

424644403 is a deficient number, since it is larger than the sum of its proper divisors (133637).

424644403 is a wasteful number, since it uses less digits than its factorization.

424644403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133636.

The product of its (nonzero) digits is 36864, while the sum is 31.

The square root of 424644403 is about 20606.9018292416. The cubic root of 424644403 is about 751.6375496763.

The spelling of 424644403 in words is "four hundred twenty-four million, six hundred forty-four thousand, four hundred three".