139451382 has 96 divisors (see below), whose sum is σ = 361670400. Its totient is φ = 39447648.

The previous prime is 139451339. The next prime is 139451383. The reversal of 139451382 is 283154931.

139451382 is a `hidden beast` number, since 139 + 4 + 513 + 8 + 2 = 666.

Its product of digits (25920) is a multiple of the sum of its prime factors (432).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139451383) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 608844 + ... + 609072.

It is an arithmetic number, because the mean of its divisors is an integer number (3767400).

Almost surely, 2^139451382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139451382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180835200).

139451382 is an abundant number, since it is smaller than the sum of its proper divisors (222219018).

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

139451382 is a wasteful number, since it uses less digits than its factorization.

139451382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 420 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 139451382 is about 11808.9534676025. The cubic root of 139451382 is about 518.5702613964.

The spelling of 139451382 in words is "one hundred thirty-nine million, four hundred fifty-one thousand, three hundred eighty-two".