3989680426 has 8 divisors (see below), whose sum is σ = 5989124484. Its totient is φ = 1993305600.

The previous prime is 3989680403. The next prime is 3989680427. The reversal of 3989680426 is 6240869893.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2129914801 + 1859765625 = 46151^2 + 43125^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3989680427) 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, 764055 + ... + 769258.

Almost surely, 2^3989680426 is an apocalyptic number.

3989680426 is a deficient number, since it is larger than the sum of its proper divisors (1999444058).

3989680426 is a wasteful number, since it uses less digits than its factorization.

3989680426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534616.

The product of its (nonzero) digits is 4478976, while the sum is 55.

The square root of 3989680426 is about 63163.9171204573. The cubic root of 3989680426 is about 1586.0347677859.

The spelling of 3989680426 in words is "three billion, nine hundred eighty-nine million, six hundred eighty thousand, four hundred twenty-six".