3989528779022 has 4 divisors (see below), whose sum is σ = 5984293168536. Its totient is φ = 1994764389510.

The previous prime is 3989528778923. The next prime is 3989528779039. The reversal of 3989528779022 is 2209778259893.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997382194754 + ... + 997382194757.

It is an arithmetic number, because the mean of its divisors is an integer number (1496073292134).

Almost surely, 2^{3989528779022} is an apocalyptic number.

3989528779022 is a deficient number, since it is larger than the sum of its proper divisors (1994764389514).

3989528779022 is a wasteful number, since it uses less digits than its factorization.

3989528779022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994764389513.

The product of its (nonzero) digits is 274337280, while the sum is 71.

The spelling of 3989528779022 in words is "three trillion, nine hundred eighty-nine billion, five hundred twenty-eight million, seven hundred seventy-nine thousand, twenty-two".