524399 has 8 divisors (see below), whose sum is σ = 562320. Its totient is φ = 487296.

The previous prime is 524389. The next prime is 524411. The reversal of 524399 is 993425.

Added to its reverse (993425) it gives a square (1517824 = 1232²).

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 524399 - 2¹⁶ = 458863 is a prime.

It is a super-2 number, since 2×524399² = 549988622402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (524309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1712 + ... + 1994.

It is an arithmetic number, because the mean of its divisors is an integer number (70290).

2⁵²⁴³⁹⁹ is an apocalyptic number.

524399 is a deficient number, since it is larger than the sum of its proper divisors (37921).

524399 is a wasteful number, since it uses less digits than its factorization.

524399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409.

The product of its digits is 9720, while the sum is 32.

The square root of 524399 is about 724.1539891487. The cubic root of 524399 is about 80.6406373531.

Adding to 524399 its reverse (993425), we get a square (1517824 = 1232²).

The spelling of 524399 in words is "five hundred twenty-four thousand, three hundred ninety-nine".