139479912 has 384 divisors, whose sum is σ = 503193600. Its totient is φ = 34214400.

The previous prime is 139479911. The next prime is 139479929. The reversal of 139479912 is 219974931.

It is not an unprimeable number, because it can be changed into a prime (139479911) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4499337 + ... + 4499367.

It is an arithmetic number, because the mean of its divisors is an integer number (1310400).

Almost surely, 2^139479912 is an apocalyptic number.

139479912 is a gapful number since it is divisible by the number (12) 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 139479912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251596800).

139479912 is an abundant number, since it is smaller than the sum of its proper divisors (363713688).

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

139479912 is a wasteful number, since it uses less digits than its factorization.

139479912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 102 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 139479912 is about 11810.1613875510. The cubic root of 139479912 is about 518.6056233042.

The spelling of 139479912 in words is "one hundred thirty-nine million, four hundred seventy-nine thousand, nine hundred twelve".