3897819779 has 8 divisors (see below), whose sum is σ = 4455619680. Its totient is φ = 3340262016.

The previous prime is 3897819769. The next prime is 3897819781. The reversal of 3897819779 is 9779187983.

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

It is not a de Polignac number, because 3897819779 - 2¹⁶ = 3897754243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3897819769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24614 + ... + 91659.

It is an arithmetic number, because the mean of its divisors is an integer number (556952460).

Almost surely, 2^3897819779 is an apocalyptic number.

3897819779 is a deficient number, since it is larger than the sum of its proper divisors (557799901).

3897819779 is a wasteful number, since it uses less digits than its factorization.

3897819779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121069.

The product of its digits is 48009024, while the sum is 68.

The square root of 3897819779 is about 62432.5218055462. The cubic root of 3897819779 is about 1573.7675456606.

The spelling of 3897819779 in words is "three billion, eight hundred ninety-seven million, eight hundred nineteen thousand, seven hundred seventy-nine".