139005412 has 96 divisors (see below), whose sum is σ = 312947712. Its totient is φ = 52569216.

The previous prime is 139005409. The next prime is 139005431. The reversal of 139005412 is 214500931.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1299063 + ... + 1299169.

It is an arithmetic number, because the mean of its divisors is an integer number (3259872).

Almost surely, 2^139005412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139005412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156473856).

139005412 is an abundant number, since it is smaller than the sum of its proper divisors (173942300).

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

139005412 is a wasteful number, since it uses less digits than its factorization.

139005412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 139005412 is about 11790.0556402419. The cubic root of 139005412 is about 518.0168696026.

The spelling of 139005412 in words is "one hundred thirty-nine million, five thousand, four hundred twelve".