539958981 has 16 divisors (see below), whose sum is σ = 765350208. Its totient is φ = 337440000.

The previous prime is 539958959. The next prime is 539959001. The reversal of 539958981 is 189859935.

It is not a de Polignac number, because 539958981 - 2¹⁴ = 539942597 is a prime.

It is a super-2 number, since 2×539958981² = 583111402325116722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539958901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8290 + ... + 33891.

It is an arithmetic number, because the mean of its divisors is an integer number (47834388).

Almost surely, 2^539958981 is an apocalyptic number.

539958981 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

539958981 is a deficient number, since it is larger than the sum of its proper divisors (225391227).

539958981 is a wasteful number, since it uses less digits than its factorization.

539958981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42452.

The product of its digits is 3499200, while the sum is 57.

The square root of 539958981 is about 23237.0174721284. The cubic root of 539958981 is about 814.3046654386.

The spelling of 539958981 in words is "five hundred thirty-nine million, nine hundred fifty-eight thousand, nine hundred eighty-one".