2539393847 has 4 divisors (see below), whose sum is σ = 2548764576. Its totient is φ = 2530023120.

The previous prime is 2539393763. The next prime is 2539393859. The reversal of 2539393847 is 7483939352.

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 2539393847 - 2²² = 2535199543 is a prime.

It is a super-3 number, since 3×2539393847³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539392847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4684958 + ... + 4685499.

It is an arithmetic number, because the mean of its divisors is an integer number (637191144).

Almost surely, 2^2539393847 is an apocalyptic number.

2539393847 is a deficient number, since it is larger than the sum of its proper divisors (9370729).

2539393847 is an equidigital number, since it uses as much as digits as its factorization.

2539393847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9370728.

The product of its digits is 4898880, while the sum is 53.

The square root of 2539393847 is about 50392.3987025821. The cubic root of 2539393847 is about 1364.3004456156.

The spelling of 2539393847 in words is "two billion, five hundred thirty-nine million, three hundred ninety-three thousand, eight hundred forty-seven".