387335489 has 2 divisors, whose sum is σ = 387335490. Its totient is φ = 387335488.

The previous prime is 387335467. The next prime is 387335491. The reversal of 387335489 is 984533783.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 383493889 + 3841600 = 19583^2 + 1960^2 .

It is a cyclic number.

It is not a de Polignac number, because 387335489 - 2²⁰ = 386286913 is a prime.

Together with 387335491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (387335449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193667744 + 193667745.

It is an arithmetic number, because the mean of its divisors is an integer number (193667745).

Almost surely, 2^387335489 is an apocalyptic number.

It is an amenable number.

387335489 is a deficient number, since it is larger than the sum of its proper divisors (1).

387335489 is an equidigital number, since it uses as much as digits as its factorization.

387335489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 50.

The square root of 387335489 is about 19680.8406578581. The cubic root of 387335489 is about 728.9466819352.

The spelling of 387335489 in words is "three hundred eighty-seven million, three hundred thirty-five thousand, four hundred eighty-nine".