139287987306 has 216 divisors, whose sum is σ = 354636045504. Its totient is φ = 39466851840.

The previous prime is 139287987277. The next prime is 139287987313. The reversal of 139287987306 is 603789782931.

It is a super-2 number, since 2×139287987306² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 41317801 + ... + 41321171.

It is an arithmetic number, because the mean of its divisors is an integer number (1641833544).

Almost surely, 2^139287987306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139287987306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177318022752).

139287987306 is an abundant number, since it is smaller than the sum of its proper divisors (215348058198).

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

139287987306 is a wasteful number, since it uses less digits than its factorization.

139287987306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3486 (or 3453 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 63.

The spelling of 139287987306 in words is "one hundred thirty-nine billion, two hundred eighty-seven million, nine hundred eighty-seven thousand, three hundred six".