387228896489 has 4 divisors (see below), whose sum is σ = 387237441924. Its totient is φ = 387220351056.

The previous prime is 387228896407. The next prime is 387228896491. The reversal of 387228896489 is 984698822783.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 48397800025 + 338831096464 = 219995^2 + 582092^2 .

It is a cyclic number.

It is not a de Polignac number, because 387228896489 - 2⁸ = 387228896233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387228893489) 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, 4204382 + ... + 4295495.

It is an arithmetic number, because the mean of its divisors is an integer number (96809360481).

Almost surely, 2^387228896489 is an apocalyptic number.

It is an amenable number.

387228896489 is a deficient number, since it is larger than the sum of its proper divisors (8545435).

387228896489 is an equidigital number, since it uses as much as digits as its factorization.

387228896489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8545434.

The product of its digits is 668860416, while the sum is 74.

The spelling of 387228896489 in words is "three hundred eighty-seven billion, two hundred twenty-eight million, eight hundred ninety-six thousand, four hundred eighty-nine".