539939401 has 4 divisors (see below), whose sum is σ = 543060612. Its totient is φ = 536818192.

The previous prime is 539939377. The next prime is 539939417. The reversal of 539939401 is 104939935.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 500864400 + 39075001 = 22380^2 + 6251^2 .

It is a cyclic number.

It is not a de Polignac number, because 539939401 - 2⁷ = 539939273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (539939501) 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, 1560346 + ... + 1560691.

It is an arithmetic number, because the mean of its divisors is an integer number (135765153).

Almost surely, 2^539939401 is an apocalyptic number.

It is an amenable number.

539939401 is a deficient number, since it is larger than the sum of its proper divisors (3121211).

539939401 is a wasteful number, since it uses less digits than its factorization.

539939401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121210.

The product of its (nonzero) digits is 131220, while the sum is 43.

The square root of 539939401 is about 23236.5961577852. The cubic root of 539939401 is about 814.2948225439.

The spelling of 539939401 in words is "five hundred thirty-nine million, nine hundred thirty-nine thousand, four hundred one".