139394304 has 288 divisors, whose sum is σ = 489251840. Its totient is φ = 38320128.

The previous prime is 139394287. The next prime is 139394327. The reversal of 139394304 is 403493931.

It is a tau number, because it is divible by the number of its divisors (288).

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 31 ways as a sum of consecutive naturals, for example, 2080479 + ... + 2080545.

Almost surely, 2^139394304 is an apocalyptic number.

139394304 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 139394304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244625920).

139394304 is an abundant number, since it is smaller than the sum of its proper divisors (349857536).

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

139394304 is an equidigital number, since it uses as much as digits as its factorization.

139394304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 139394304 is about 11806.5364946711. The cubic root of 139394304 is about 518.4995007910.

The spelling of 139394304 in words is "one hundred thirty-nine million, three hundred ninety-four thousand, three hundred four".