424408 has 8 divisors (see below), whose sum is σ = 795780. Its totient is φ = 212200.

The previous prime is 424397. The next prime is 424423. The reversal of 424408 is 804424.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

424408 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26518 + ... + 26533.

2⁴²⁴⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

424408 is a deficient number, since it is larger than the sum of its proper divisors (371372).

424408 is a wasteful number, since it uses less digits than its factorization.

424408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53057 (or 53053 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 424408 is about 651.4660390228. The cubic root of 424408 is about 75.1498042868.

It can be divided in two parts, 42 and 4408, that multiplied together give a triangular number (185136 = T₆₀₈).

The spelling of 424408 in words is "four hundred twenty-four thousand, four hundred eight".