239716509490 has 8 divisors (see below), whose sum is σ = 431489717100. Its totient is φ = 95886603792.

The previous prime is 239716509481. The next prime is 239716509491. The reversal of 239716509490 is 94905617932.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 227306772289 + 12409737201 = 476767^2 + 111399^2 .

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

It is not an unprimeable number, because it can be changed into a prime (239716509491) 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, 11985825465 + ... + 11985825484.

Almost surely, 2^239716509490 is an apocalyptic number.

239716509490 is a deficient number, since it is larger than the sum of its proper divisors (191773207610).

239716509490 is a wasteful number, since it uses less digits than its factorization.

239716509490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23971650956.

The product of its (nonzero) digits is 3674160, while the sum is 55.

The spelling of 239716509490 in words is "two hundred thirty-nine billion, seven hundred sixteen million, five hundred nine thousand, four hundred ninety".