139894227720 has 192 divisors, whose sum is σ = 489812384880. Its totient is φ = 34422663168.

The previous prime is 139894227673. The next prime is 139894227751. The reversal of 139894227720 is 27722498931.

It is a happy number.

139894227720 is a `hidden beast` number, since 1 + 398 + 9 + 4 + 227 + 7 + 20 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 40408236324 + 99485991396 = 201018^2 + 315414^2 .

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21023914 + ... + 21030566.

Almost surely, 2^139894227720 is an apocalyptic number.

139894227720 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 139894227720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244906192440).

139894227720 is an abundant number, since it is smaller than the sum of its proper divisors (349918157160).

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

139894227720 is a wasteful number, since it uses less digits than its factorization.

139894227720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11176 (or 11169 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 139894227720 in words is "one hundred thirty-nine billion, eight hundred ninety-four million, two hundred twenty-seven thousand, seven hundred twenty".