239899142026 has 16 divisors (see below), whose sum is σ = 369432189000. Its totient is φ = 116767883520.

The previous prime is 239899142023. The next prime is 239899142051. The reversal of 239899142026 is 620241998932.

It is a Cunningham number, because it is equal to 489795²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 207479339001 + 32419803025 = 455499^2 + 180055^2 .

It is not an unprimeable number, because it can be changed into a prime (239899142023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3163401 + ... + 3238348.

Almost surely, 2^239899142026 is an apocalyptic number.

239899142026 is a deficient number, since it is larger than the sum of its proper divisors (129533046974).

239899142026 is a wasteful number, since it uses less digits than its factorization.

239899142026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6402249.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 239899142026 in words is "two hundred thirty-nine billion, eight hundred ninety-nine million, one hundred forty-two thousand, twenty-six".