139909979430 has 256 divisors, whose sum is σ = 425998621440. Its totient is φ = 32370057216.

The previous prime is 139909979351. The next prime is 139909979459. The reversal of 139909979430 is 34979909931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 72378744 + ... + 72380676.

It is an arithmetic number, because the mean of its divisors is an integer number (1664057115).

Almost surely, 2^139909979430 is an apocalyptic number.

139909979430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139909979430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212999310720).

139909979430 is an abundant number, since it is smaller than the sum of its proper divisors (286088642010).

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

139909979430 is a wasteful number, since it uses less digits than its factorization.

139909979430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192 (or 3186 counting only the distinct ones).

The product of its (nonzero) digits is 14880348, while the sum is 63.

The spelling of 139909979430 in words is "one hundred thirty-nine billion, nine hundred nine million, nine hundred seventy-nine thousand, four hundred thirty".