139705507984 has 75 divisors (see below), whose sum is σ = 315939542867. Its totient is φ = 59842392288.

The previous prime is 139705507957. The next prime is 139705508009. The reversal of 139705507984 is 489705507931.

The square root of 139705507984 is 373772.

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

It is a super-2 number, since 2×139705507984² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 73258359 + ... + 73260265.

Almost surely, 2^139705507984 is an apocalyptic number.

139705507984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

139705507984 is the 373772-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139705507984

139705507984 is an abundant number, since it is smaller than the sum of its proper divisors (176234034883).

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

139705507984 is an frugal number, since it uses more digits than its factorization.

139705507984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3850 (or 1916 counting only the distinct ones).

The product of its (nonzero) digits is 9525600, while the sum is 58.

The spelling of 139705507984 in words is "one hundred thirty-nine billion, seven hundred five million, five hundred seven thousand, nine hundred eighty-four".