539772290 has 8 divisors (see below), whose sum is σ = 971590140. Its totient is φ = 215908912.

The previous prime is 539772281. The next prime is 539772313. The reversal of 539772290 is 92277935.

It is a happy number.

It is a Cunningham number, because it is equal to 23233²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 539772289 + 1 = 23233^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26988605 + ... + 26988624.

Almost surely, 2^539772290 is an apocalyptic number.

539772290 is a deficient number, since it is larger than the sum of its proper divisors (431817850).

539772290 is a wasteful number, since it uses less digits than its factorization.

539772290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53977236.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 539772290 is about 23233.0000215211. Note that the first 4 decimals coincide. The cubic root of 539772290 is about 814.2108059161.

The spelling of 539772290 in words is "five hundred thirty-nine million, seven hundred seventy-two thousand, two hundred ninety".