3928998287 has 2 divisors, whose sum is σ = 3928998288. Its totient is φ = 3928998286.

The previous prime is 3928998263. The next prime is 3928998317. The reversal of 3928998287 is 7828998293.

It is a weak prime.

It is an emirp because it is prime and its reverse (7828998293) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3928998287 - 2¹² = 3928994191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3928998487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1964499143 + 1964499144.

It is an arithmetic number, because the mean of its divisors is an integer number (1964499144).

Almost surely, 2^3928998287 is an apocalyptic number.

3928998287 is a deficient number, since it is larger than the sum of its proper divisors (1).

3928998287 is an equidigital number, since it uses as much as digits as its factorization.

3928998287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 65.

The square root of 3928998287 is about 62681.7221125904. The cubic root of 3928998287 is about 1577.9525751411.

The spelling of 3928998287 in words is "three billion, nine hundred twenty-eight million, nine hundred ninety-eight thousand, two hundred eighty-seven".