139290638706 has 24 divisors (see below), whose sum is σ = 301811029884. Its totient is φ = 46427959680.

The previous prime is 139290638701. The next prime is 139290638723. The reversal of 139290638706 is 607836092931.

It can be written as a sum of positive squares in 2 ways, for example, as 125534867481 + 13755771225 = 354309^2 + 117285^2 .

It is a super-2 number, since 2×139290638706² (a number of 23 digits) contains 22 as substring.

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 a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139290638701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 217030 + ... + 570686.

Almost surely, 2^139290638706 is an apocalyptic number.

139290638706 is an abundant number, since it is smaller than the sum of its proper divisors (162520391178).

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

139290638706 is a wasteful number, since it uses less digits than its factorization.

139290638706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375546 (or 375543 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 139290638706 in words is "one hundred thirty-nine billion, two hundred ninety million, six hundred thirty-eight thousand, seven hundred six".