3989259391 has 4 divisors (see below), whose sum is σ = 4296125512. Its totient is φ = 3682393272.

The previous prime is 3989259383. The next prime is 3989259413. The reversal of 3989259391 is 1939529893.

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

It is a cyclic number.

It is not a de Polignac number, because 3989259391 - 2³ = 3989259383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989259331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153433041 + ... + 153433066.

It is an arithmetic number, because the mean of its divisors is an integer number (1074031378).

Almost surely, 2^3989259391 is an apocalyptic number.

3989259391 is a deficient number, since it is larger than the sum of its proper divisors (306866121).

3989259391 is a wasteful number, since it uses less digits than its factorization.

3989259391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306866120.

The product of its digits is 4723920, while the sum is 58.

The square root of 3989259391 is about 63160.5841565766. The cubic root of 3989259391 is about 1585.9789738735.

The spelling of 3989259391 in words is "three billion, nine hundred eighty-nine million, two hundred fifty-nine thousand, three hundred ninety-one".