3891279305379 has 8 divisors (see below), whose sum is σ = 5201057915920. Its totient is φ = 2587843449216.

The previous prime is 3891279305371. The next prime is 3891279305387. The reversal of 3891279305379 is 9735039721983.

It is an interprime number because it is at equal distance from previous prime (3891279305371) and next prime (3891279305387).

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

It is not a de Polignac number, because 3891279305379 - 2³ = 3891279305371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3891279305371) 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, 1585687162 + ... + 1585689615.

It is an arithmetic number, because the mean of its divisors is an integer number (650132239490).

Almost surely, 2^{3891279305379} is an apocalyptic number.

3891279305379 is a deficient number, since it is larger than the sum of its proper divisors (1309778610541).

3891279305379 is a wasteful number, since it uses less digits than its factorization.

3891279305379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171377189.

The product of its (nonzero) digits is 77157360, while the sum is 66.

The spelling of 3891279305379 in words is "three trillion, eight hundred ninety-one billion, two hundred seventy-nine million, three hundred five thousand, three hundred seventy-nine".