139674860361 has 9 divisors (see below), whose sum is σ = 201754195591. Its totient is φ = 93115826112.

The previous prime is 139674860359. The next prime is 139674860363. The reversal of 139674860361 is 163068476931.

It is a happy number.

The square root of 139674860361 is 373731.

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

139674860361 is a `hidden beast` number, since 13 + 96 + 7 + 486 + 0 + 3 + 61 = 666.

It is an interprime number because it is at equal distance from previous prime (139674860359) and next prime (139674860363).

It can be written as a sum of positive squares in only one way, i.e., 113087601225 + 26587259136 = 336285^2 + 163056^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 139674860361 - 2¹ = 139674860359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139674860298 and 139674860307.

It is not an unprimeable number, because it can be changed into a prime (139674860363) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1058905 + ... + 1183481.

Almost surely, 2^139674860361 is an apocalyptic number.

139674860361 is the 373731-st square number.

139674860361 is the 186866-th centered octagonal number.

It is an amenable number.

139674860361 is a deficient number, since it is larger than the sum of its proper divisors (62079335230).

139674860361 is an frugal number, since it uses more digits than its factorization.

139674860361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249160 (or 124580 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 139674860361 in words is "one hundred thirty-nine billion, six hundred seventy-four million, eight hundred sixty thousand, three hundred sixty-one".