4219667797489 has 9 divisors (see below), whose sum is σ = 4227024293067. Its totient is φ = 4212324093264.

The previous prime is 4219667797391. The next prime is 4219667797517. The reversal of 4219667797489 is 9847977669124.

It is a happy number.

The square root of 4219667797489 is 2054183.

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., 2842781463025 + 1376886334464 = 1686055^2 + 1173408^2 .

It is not a de Polignac number, because 4219667797489 - 2²¹ = 4219665700337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4219667797589) 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, 1476956149 + ... + 1476959005.

Almost surely, 2^{4219667797489} is an apocalyptic number.

4219667797489 is the 2054183-rd square number.

4219667797489 is the 1027092-nd centered octagonal number.

It is an amenable number.

4219667797489 is a deficient number, since it is larger than the sum of its proper divisors (7356495578).

4219667797489 is an frugal number, since it uses more digits than its factorization.

4219667797489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7152 (or 3576 counting only the distinct ones).

The product of its digits is 2304433152, while the sum is 79.

The spelling of 4219667797489 in words is "four trillion, two hundred nineteen billion, six hundred sixty-seven million, seven hundred ninety-seven thousand, four hundred eighty-nine".