139259412 has 48 divisors (see below), whose sum is σ = 365523200. Its totient is φ = 46416888.

The previous prime is 139259389. The next prime is 139259431. The reversal of 139259412 is 214952931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 789 + ... + 16707.

Almost surely, 2^139259412 is an apocalyptic number.

139259412 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 139259412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182761600).

139259412 is an abundant number, since it is smaller than the sum of its proper divisors (226263788).

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

139259412 is an equidigital number, since it uses as much as digits as its factorization.

139259412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15944 (or 15924 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 139259412 is about 11800.8225137064. The cubic root of 139259412 is about 518.3321959931.

The spelling of 139259412 in words is "one hundred thirty-nine million, two hundred fifty-nine thousand, four hundred twelve".