539139136 has 112 divisors (see below), whose sum is σ = 1209202560. Its totient is φ = 237219840.

The previous prime is 539139121. The next prime is 539139137. The reversal of 539139136 is 631931935.

539139136 = T₇₃ + T₇₄ + ... + T₁₄₇₈.

It is not an unprimeable number, because it can be changed into a prime (539139137) 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, 1034556 + ... + 1035076.

Almost surely, 2^539139136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 539139136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (604601280).

539139136 is an abundant number, since it is smaller than the sum of its proper divisors (670063424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

539139136 is a wasteful number, since it uses less digits than its factorization.

539139136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 602 counting only the distinct ones).

The product of its digits is 65610, while the sum is 40.

The square root of 539139136 is about 23219.3698450238. The cubic root of 539139136 is about 813.8923243769.

The spelling of 539139136 in words is "five hundred thirty-nine million, one hundred thirty-nine thousand, one hundred thirty-six".