245493847 has 4 divisors (see below), whose sum is σ = 245525296. Its totient is φ = 245462400.

The previous prime is 245493803. The next prime is 245493907. The reversal of 245493847 is 748394542.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245493847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245493797 and 245493806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245493047) 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, 5878 + ... + 22924.

It is an arithmetic number, because the mean of its divisors is an integer number (61381324).

Almost surely, 2^245493847 is an apocalyptic number.

245493847 is a deficient number, since it is larger than the sum of its proper divisors (31449).

245493847 is a wasteful number, since it uses less digits than its factorization.

245493847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31448.

The product of its digits is 967680, while the sum is 46.

The square root of 245493847 is about 15668.2432646420. The cubic root of 245493847 is about 626.1526224716.

The spelling of 245493847 in words is "two hundred forty-five million, four hundred ninety-three thousand, eight hundred forty-seven".