539801778 has 16 divisors (see below), whose sum is σ = 1080145440. Its totient is φ = 179843616.

The previous prime is 539801683. The next prime is 539801809. The reversal of 539801778 is 877108935.

It is a super-2 number, since 2×539801778² = 582771919063922568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9000 + ... + 34067.

It is an arithmetic number, because the mean of its divisors is an integer number (67509090).

Almost surely, 2^539801778 is an apocalyptic number.

539801778 is an abundant number, since it is smaller than the sum of its proper divisors (540343662).

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

539801778 is a wasteful number, since it uses less digits than its factorization.

539801778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45161.

The product of its (nonzero) digits is 423360, while the sum is 48.

The square root of 539801778 is about 23233.6346274103. The cubic root of 539801778 is about 814.2256325454.

The spelling of 539801778 in words is "five hundred thirty-nine million, eight hundred one thousand, seven hundred seventy-eight".