1239841086 has 64 divisors (see below), whose sum is σ = 2853273600. Its totient is φ = 355212000.

The previous prime is 1239841079. The next prime is 1239841087. The reversal of 1239841086 is 6801489321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1239841087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1076611 + ... + 1077761.

It is an arithmetic number, because the mean of its divisors is an integer number (44582400).

Almost surely, 2^1239841086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1239841086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1426636800).

1239841086 is an abundant number, since it is smaller than the sum of its proper divisors (1613432514).

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

1239841086 is a wasteful number, since it uses less digits than its factorization.

1239841086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 1239841086 is about 35211.3772238463. The cubic root of 1239841086 is about 1074.2911746193.

The spelling of 1239841086 in words is "one billion, two hundred thirty-nine million, eight hundred forty-one thousand, eighty-six".