539977894 has 4 divisors (see below), whose sum is σ = 809966844. Its totient is φ = 269988946.

The previous prime is 539977859. The next prime is 539977903. The reversal of 539977894 is 498779935.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 498779935 = 5 ⋅99755987.

It is a super-3 number, since 3×539977894³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134994472 + ... + 134994475.

It is an arithmetic number, because the mean of its divisors is an integer number (202491711).

Almost surely, 2^539977894 is an apocalyptic number.

539977894 is a deficient number, since it is larger than the sum of its proper divisors (269988950).

539977894 is a wasteful number, since it uses less digits than its factorization.

539977894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269988949.

The product of its digits is 17146080, while the sum is 61.

The square root of 539977894 is about 23237.4244269885. The cubic root of 539977894 is about 814.3141728054.

The spelling of 539977894 in words is "five hundred thirty-nine million, nine hundred seventy-seven thousand, eight hundred ninety-four".