139982984449 has 81 divisors (see below), whose sum is σ = 184881781539. Its totient is φ = 105598120320.

The previous prime is 139982984381. The next prime is 139982984461. The reversal of 139982984449 is 944489289931.

The square root of 139982984449 is 374143.

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

It can be written as a sum of positive squares in only one way, i.e., 2466612225 + 137516372224 = 49665^2 + 370832^2 .

It is not a de Polignac number, because 139982984449 - 2¹⁵ = 139982951681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139982981449) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1238787417 + ... + 1238787529.

Almost surely, 2^139982984449 is an apocalyptic number.

139982984449 is the 374143-rd square number.

139982984449 is the 187072-nd centered octagonal number.

It is an amenable number.

139982984449 is a deficient number, since it is larger than the sum of its proper divisors (44898797090).

139982984449 is an equidigital number, since it uses as much as digits as its factorization.

139982984449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348 (or 174 counting only the distinct ones).

The product of its digits is 161243136, while the sum is 70.

The spelling of 139982984449 in words is "one hundred thirty-nine billion, nine hundred eighty-two million, nine hundred eighty-four thousand, four hundred forty-nine".