845248439 has 4 divisors (see below), whose sum is σ = 965998224. Its totient is φ = 724498656.

The previous prime is 845248433. The next prime is 845248441. The reversal of 845248439 is 934842548.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 845248439 - 2¹² = 845244343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 845248393 and 845248402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845248433) 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, 60374882 + ... + 60374895.

It is an arithmetic number, because the mean of its divisors is an integer number (241499556).

Almost surely, 2^845248439 is an apocalyptic number.

845248439 is a deficient number, since it is larger than the sum of its proper divisors (120749785).

845248439 is a wasteful number, since it uses less digits than its factorization.

845248439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120749784.

The product of its digits is 1105920, while the sum is 47.

The square root of 845248439 is about 29073.1566741556. The cubic root of 845248439 is about 945.4998387810.

The spelling of 845248439 in words is "eight hundred forty-five million, two hundred forty-eight thousand, four hundred thirty-nine".