424991 has 8 divisors (see below), whose sum is σ = 491040. Its totient is φ = 360288.

The previous prime is 424967. The next prime is 424997. The reversal of 424991 is 199424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 424991 - 2¹⁴ = 408607 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 424991.

It is not an unprimeable number, because it can be changed into a prime (424997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485 + ... + 1041.

It is an arithmetic number, because the mean of its divisors is an integer number (61380).

2⁴²⁴⁹⁹¹ is an apocalyptic number.

424991 is a deficient number, since it is larger than the sum of its proper divisors (66049).

424991 is a wasteful number, since it uses less digits than its factorization.

424991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673.

The product of its digits is 2592, while the sum is 29.

The square root of 424991 is about 651.9133377988. The cubic root of 424991 is about 75.1841990908.

The spelling of 424991 in words is "four hundred twenty-four thousand, nine hundred ninety-one".