245923439 has 4 divisors (see below), whose sum is σ = 248886456. Its totient is φ = 242960424.

The previous prime is 245923367. The next prime is 245923459. The reversal of 245923439 is 934329542.

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 245923439 - 2¹² = 245919343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 245923396 and 245923405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245923459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1481384 + ... + 1481549.

It is an arithmetic number, because the mean of its divisors is an integer number (62221614).

Almost surely, 2^245923439 is an apocalyptic number.

245923439 is a deficient number, since it is larger than the sum of its proper divisors (2963017).

245923439 is an equidigital number, since it uses as much as digits as its factorization.

245923439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2963016.

The product of its digits is 233280, while the sum is 41.

The square root of 245923439 is about 15681.9462758932. The cubic root of 245923439 is about 626.5176464294.

The spelling of 245923439 in words is "two hundred forty-five million, nine hundred twenty-three thousand, four hundred thirty-nine".