245399 has 8 divisors (see below), whose sum is σ = 306048. Its totient is φ = 191160.

The previous prime is 245389. The next prime is 245407. The reversal of 245399 is 993542.

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 245399 - 2⁴ = 245383 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 (245339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1517 + ... + 1670.

It is an arithmetic number, because the mean of its divisors is an integer number (38256).

2²⁴⁵³⁹⁹ is an apocalyptic number.

245399 is a deficient number, since it is larger than the sum of its proper divisors (60649).

245399 is a wasteful number, since it uses less digits than its factorization.

245399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3205.

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

The square root of 245399 is about 495.3776337301. The cubic root of 245399 is about 62.6071973678.

It can be divided in two parts, 2453 and 99, that added together give a palindrome (2552).

The spelling of 245399 in words is "two hundred forty-five thousand, three hundred ninety-nine".