139681792 has 84 divisors (see below), whose sum is σ = 301774860. Its totient is φ = 64618496.

The previous prime is 139681781. The next prime is 139681799. The reversal of 139681792 is 297186931.

It is a happy number.

It is a super-2 number, since 2×139681792² = 39022006032662528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139681799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2367459 + ... + 2367517.

Almost surely, 2^139681792 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 139681792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150887430).

139681792 is an abundant number, since it is smaller than the sum of its proper divisors (162093068).

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

139681792 is an frugal number, since it uses more digits than its factorization.

139681792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 78 counting only the distinct ones).

The product of its digits is 163296, while the sum is 46.

The square root of 139681792 is about 11818.7051744258. The cubic root of 139681792 is about 518.8557086169.

The spelling of 139681792 in words is "one hundred thirty-nine million, six hundred eighty-one thousand, seven hundred ninety-two".