3979801829 has 2 divisors, whose sum is σ = 3979801830. Its totient is φ = 3979801828.

The previous prime is 3979801823. The next prime is 3979801867. The reversal of 3979801829 is 9281089793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3967740100 + 12061729 = 62990^2 + 3473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3979801829 is a prime.

It is a super-2 number, since 2×3979801829² = 31677645196223490482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3979801823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1989900914 + 1989900915.

It is an arithmetic number, because the mean of its divisors is an integer number (1989900915).

Almost surely, 2^3979801829 is an apocalyptic number.

It is an amenable number.

3979801829 is a deficient number, since it is larger than the sum of its proper divisors (1).

3979801829 is an equidigital number, since it uses as much as digits as its factorization.

3979801829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 56.

The square root of 3979801829 is about 63085.6705520358. The cubic root of 3979801829 is about 1584.7246588889.

The spelling of 3979801829 in words is "three billion, nine hundred seventy-nine million, eight hundred one thousand, eight hundred twenty-nine".