139681350 has 216 divisors, whose sum is σ = 432193320. Its totient is φ = 32140800.

The previous prime is 139681273. The next prime is 139681357. The reversal of 139681350 is 53186931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139681357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 4505835 + ... + 4505865.

It is an arithmetic number, because the mean of its divisors is an integer number (2000895).

Almost surely, 2^139681350 is an apocalyptic number.

139681350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139681350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216096660).

139681350 is an abundant number, since it is smaller than the sum of its proper divisors (292511970).

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

139681350 is a wasteful number, since it uses less digits than its factorization.

139681350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 77 counting only the distinct ones).

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

The square root of 139681350 is about 11818.6864752391. The cubic root of 139681350 is about 518.8551613385.

The spelling of 139681350 in words is "one hundred thirty-nine million, six hundred eighty-one thousand, three hundred fifty".