3891017139 has 8 divisors (see below), whose sum is σ = 5188808592. Its totient is φ = 2593618560.

The previous prime is 3891017129. The next prime is 3891017159. The reversal of 3891017139 is 9317101983.

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

It is not a de Polignac number, because 3891017139 - 2¹⁵ = 3890984371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3891017139.

It is not an unprimeable number, because it can be changed into a prime (3891017129) 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, 74274 + ... + 115319.

It is an arithmetic number, because the mean of its divisors is an integer number (648601074).

Almost surely, 2^3891017139 is an apocalyptic number.

3891017139 is a deficient number, since it is larger than the sum of its proper divisors (1297791453).

3891017139 is a wasteful number, since it uses less digits than its factorization.

3891017139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196437.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 3891017139 is about 62378.0180752803. The cubic root of 3891017139 is about 1572.8514772971.

The spelling of 3891017139 in words is "three billion, eight hundred ninety-one million, seventeen thousand, one hundred thirty-nine".