425479 has 4 divisors (see below), whose sum is σ = 428680. Its totient is φ = 422280.

The previous prime is 425473. The next prime is 425489. The reversal of 425479 is 974524.

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 425479 - 2³ = 425471 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 425479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425471) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1392 + ... + 1669.

It is an arithmetic number, because the mean of its divisors is an integer number (107170).

2⁴²⁵⁴⁷⁹ is an apocalyptic number.

425479 is a deficient number, since it is larger than the sum of its proper divisors (3201).

425479 is a wasteful number, since it uses less digits than its factorization.

425479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200.

The product of its digits is 10080, while the sum is 31.

The square root of 425479 is about 652.2875132946. The cubic root of 425479 is about 75.2129650763.

The spelling of 425479 in words is "four hundred twenty-five thousand, four hundred seventy-nine".