3897624765839 has 16 divisors (see below), whose sum is σ = 4563650763840. Its totient is φ = 3258925021440.

The previous prime is 3897624765823. The next prime is 3897624765841. The reversal of 3897624765839 is 9385674267983.

It is a cyclic number.

It is not a de Polignac number, because 3897624765839 - 2⁴ = 3897624765823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3897624765839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897624765809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1420817 + ... + 3132725.

It is an arithmetic number, because the mean of its divisors is an integer number (285228172740).

Almost surely, 2^{3897624765839} is an apocalyptic number.

3897624765839 is a deficient number, since it is larger than the sum of its proper divisors (666025998001).

3897624765839 is a wasteful number, since it uses less digits than its factorization.

3897624765839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1719890.

The product of its digits is 3292047360, while the sum is 77.

The spelling of 3897624765839 in words is "three trillion, eight hundred ninety-seven billion, six hundred twenty-four million, seven hundred sixty-five thousand, eight hundred thirty-nine".