3946069998779 has 4 divisors (see below), whose sum is σ = 3946323927840. Its totient is φ = 3945816069720.

The previous prime is 3946069998677. The next prime is 3946069998841. The reversal of 3946069998779 is 9778999606493.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3946069998779 is a prime.

It is a super-2 number, since 2×3946069998779² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3946069998779.

It is not an unprimeable number, because it can be changed into a prime (3946069998379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126941219 + ... + 126972300.

It is an arithmetic number, because the mean of its divisors is an integer number (986580981960).

Almost surely, 2^{3946069998779} is an apocalyptic number.

3946069998779 is a deficient number, since it is larger than the sum of its proper divisors (253929061).

3946069998779 is a wasteful number, since it uses less digits than its factorization.

3946069998779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253929060.

The product of its (nonzero) digits is 9999593856, while the sum is 86.

The spelling of 3946069998779 in words is "three trillion, nine hundred forty-six billion, sixty-nine million, nine hundred ninety-eight thousand, seven hundred seventy-nine".