340842289489 has 9 divisors (see below), whose sum is σ = 369085963953. Its totient is φ = 314616646032.

The previous prime is 340842289477. The next prime is 340842289573. The reversal of 340842289489 is 984982248043.

The square root of 340842289489 is 583817.

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

It can be written as a sum of positive squares in 4 ways, for example, as 159189030225 + 181653259264 = 398985^2 + 426208^2 .

It is a de Polignac number, because none of the positive numbers 2^k-340842289489 is a prime.

It is a super-2 number, since 2×340842289489² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340842289409) 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, 7567167 + ... + 7612075.

Almost surely, 2^340842289489 is an apocalyptic number.

340842289489 is the 583817-th square number.

340842289489 is the 291909-th centered octagonal number.

It is an amenable number.

340842289489 is a deficient number, since it is larger than the sum of its proper divisors (28243674464).

340842289489 is an frugal number, since it uses more digits than its factorization.

340842289489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89844 (or 44922 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 61.

The spelling of 340842289489 in words is "three hundred forty billion, eight hundred forty-two million, two hundred eighty-nine thousand, four hundred eighty-nine".