139018439924 has 192 divisors, whose sum is σ = 326392872960. Its totient is φ = 50259709440.

The previous prime is 139018439789. The next prime is 139018439939. The reversal of 139018439924 is 429934810931.

It is a super-2 number, since 2×139018439924² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 82112822 + ... + 82114514.

It is an arithmetic number, because the mean of its divisors is an integer number (1699962880).

Almost surely, 2^139018439924 is an apocalyptic number.

139018439924 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139018439924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163196436480).

139018439924 is an abundant number, since it is smaller than the sum of its proper divisors (187374433036).

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

139018439924 is a wasteful number, since it uses less digits than its factorization.

139018439924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150 (or 2148 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 139018439924 in words is "one hundred thirty-nine billion, eighteen million, four hundred thirty-nine thousand, nine hundred twenty-four".