4219666399 has 8 divisors (see below), whose sum is σ = 4618752992. Its totient is φ = 3831222240.

The previous prime is 4219666397. The next prime is 4219666427. The reversal of 4219666399 is 9936669124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4219666399 - 2¹ = 4219666397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4219666397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2659779 + ... + 2661364.

It is an arithmetic number, because the mean of its divisors is an integer number (577344124).

Almost surely, 2^4219666399 is an apocalyptic number.

4219666399 is a deficient number, since it is larger than the sum of its proper divisors (399086593).

4219666399 is a wasteful number, since it uses less digits than its factorization.

4219666399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5321217.

The product of its digits is 3779136, while the sum is 55.

The square root of 4219666399 is about 64958.9593435732. The cubic root of 4219666399 is about 1615.9430059007.

The spelling of 4219666399 in words is "four billion, two hundred nineteen million, six hundred sixty-six thousand, three hundred ninety-nine".