139196640 has 192 divisors, whose sum is σ = 490758912. Its totient is φ = 32870400.

The previous prime is 139196611. The next prime is 139196653. The reversal of 139196640 is 46691931.

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 31 ways as a sum of consecutive naturals, for example, 216159 + ... + 216801.

It is an arithmetic number, because the mean of its divisors is an integer number (2556036).

Almost surely, 2^139196640 is an apocalyptic number.

139196640 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 139196640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245379456).

139196640 is an abundant number, since it is smaller than the sum of its proper divisors (351562272).

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

139196640 is a wasteful number, since it uses less digits than its factorization.

139196640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713 (or 705 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 139196640 is about 11798.1625688071. The cubic root of 139196640 is about 518.2543038586.

The spelling of 139196640 in words is "one hundred thirty-nine million, one hundred ninety-six thousand, six hundred forty".