139898320 has 80 divisors (see below), whose sum is σ = 343906560. Its totient is φ = 52838912.

The previous prime is 139898309. The next prime is 139898359. The reversal of 139898320 is 23898931.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 108399 + ... + 109681.

It is an arithmetic number, because the mean of its divisors is an integer number (4298832).

Almost surely, 2^139898320 is an apocalyptic number.

139898320 is a gapful number since it is divisible by the number (10) 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 139898320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171953280).

139898320 is an abundant number, since it is smaller than the sum of its proper divisors (204008240).

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

139898320 is a wasteful number, since it uses less digits than its factorization.

139898320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372 (or 1366 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 139898320 is about 11827.8620215151. The cubic root of 139898320 is about 519.1236719300.

The spelling of 139898320 in words is "one hundred thirty-nine million, eight hundred ninety-eight thousand, three hundred twenty".