3399661129489 has 27 divisors (see below), whose sum is σ = 3658981947579. Its totient is φ = 3158237262960.

The previous prime is 3399661129441. The next prime is 3399661129541. The reversal of 3399661129489 is 9849211669933.

The square root of 3399661129489 is 1843817.

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., 2450805905025 + 948855224464 = 1565505^2 + 974092^2 .

It is not a de Polignac number, because 3399661129489 - 2²⁷ = 3399526911761 is a prime.

It is a super-2 number, since 2×3399661129489² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3399661129589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1856722804 + ... + 1856724634.

Almost surely, 2^{3399661129489} is an apocalyptic number.

3399661129489 is the 1843817-th square number.

3399661129489 is the 921909-th centered octagonal number.

It is an amenable number.

3399661129489 is a deficient number, since it is larger than the sum of its proper divisors (259320818090).

3399661129489 is an frugal number, since it uses more digits than its factorization.

3399661129489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3806 (or 1903 counting only the distinct ones).

The product of its digits is 136048896, while the sum is 70.

The spelling of 3399661129489 in words is "three trillion, three hundred ninety-nine billion, six hundred sixty-one million, one hundred twenty-nine thousand, four hundred eighty-nine".