139919387364 has 81 divisors (see below), whose sum is σ = 367428860617. Its totient is φ = 46619596656.

The previous prime is 139919387357. The next prime is 139919387393. The reversal of 139919387364 is 463783919931.

The square root of 139919387364 is 374058.

It is a perfect power (a square), and thus also a powerful number.

139919387364 is a `hidden beast` number, since 1 + 3 + 9 + 9 + 193 + 87 + 364 = 666.

It can be written as a sum of positive squares in only one way, i.e., 116730188964 + 23189198400 = 341658^2 + 152280^2 .

It is a tau number, because it is divible by the number of its divisors (81).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 60596242 + ... + 60598550.

Almost surely, 2^139919387364 is an apocalyptic number.

139919387364 is the 374058-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139919387364

139919387364 is an abundant number, since it is smaller than the sum of its proper divisors (227509473253).

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

139919387364 is an frugal number, since it uses more digits than its factorization.

139919387364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4646 (or 2314 counting only the distinct ones).

The product of its digits is 26453952, while the sum is 63.

The spelling of 139919387364 in words is "one hundred thirty-nine billion, nine hundred nineteen million, three hundred eighty-seven thousand, three hundred sixty-four".