539794781 has 8 divisors (see below), whose sum is σ = 553284864. Its totient is φ = 526347360.

The previous prime is 539794763. The next prime is 539794793. The reversal of 539794781 is 187497935.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 539794781 - 2¹⁴ = 539778397 is a prime.

It is a super-2 number, since 2×539794781² = 582756811189675922, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539794711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15761 + ... + 36441.

It is an arithmetic number, because the mean of its divisors is an integer number (69160608).

Almost surely, 2^539794781 is an apocalyptic number.

It is an amenable number.

539794781 is a deficient number, since it is larger than the sum of its proper divisors (13490083).

539794781 is a wasteful number, since it uses less digits than its factorization.

539794781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21331.

The product of its digits is 1905120, while the sum is 53.

The square root of 539794781 is about 23233.4840478134. The cubic root of 539794781 is about 814.2221144877. Note that the first 3 decimals are identical.

The spelling of 539794781 in words is "five hundred thirty-nine million, seven hundred ninety-four thousand, seven hundred eighty-one".