63399 has 8 divisors (see below), whose sum is σ = 96640. Its totient is φ = 36216.

The previous prime is 63397. The next prime is 63409. The reversal of 63399 is 99336.

Added to its reverse (99336) it gives a triangular number (162735 = T₅₇₀).

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

It is not a de Polignac number, because 63399 - 2¹ = 63397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63391) 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, 1489 + ... + 1530.

It is an arithmetic number, because the mean of its divisors is an integer number (12080).

2⁶³³⁹⁹ is an apocalyptic number.

63399 is a deficient number, since it is larger than the sum of its proper divisors (33241).

63399 is a wasteful number, since it uses less digits than its factorization.

63399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3029.

The product of its digits is 4374, while the sum is 30.

The square root of 63399 is about 251.7915804788. The cubic root of 63399 is about 39.8743976809.

Adding to 63399 its reverse (99336), we get a triangular number (162735 = T₅₇₀).

Subtracting 63399 from its reverse (99336), we obtain a cube (35937 = 33³).

The spelling of 63399 in words is "sixty-three thousand, three hundred ninety-nine".