539847381 has 4 divisors (see below), whose sum is σ = 719796512. Its totient is φ = 359898252.

The previous prime is 539847367. The next prime is 539847391. The reversal of 539847381 is 183748935.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 539847381 - 2⁶ = 539847317 is a prime.

It is a super-2 number, since 2×539847381² = 582870389545118322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 539847381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539847391) 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, 89974561 + ... + 89974566.

It is an arithmetic number, because the mean of its divisors is an integer number (179949128).

Almost surely, 2^539847381 is an apocalyptic number.

It is an amenable number.

539847381 is a deficient number, since it is larger than the sum of its proper divisors (179949131).

539847381 is a wasteful number, since it uses less digits than its factorization.

539847381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179949130.

The product of its digits is 725760, while the sum is 48.

The square root of 539847381 is about 23234.6160071562. The cubic root of 539847381 is about 814.2485607680.

The spelling of 539847381 in words is "five hundred thirty-nine million, eight hundred forty-seven thousand, three hundred eighty-one".