387897119 has 4 divisors (see below), whose sum is σ = 388192080. Its totient is φ = 387602160.

The previous prime is 387897091. The next prime is 387897121. The reversal of 387897119 is 911798783.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387897119 is a prime.

It is a super-2 number, since 2×387897119² = 300928349857000322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387897199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145499 + ... + 148140.

It is an arithmetic number, because the mean of its divisors is an integer number (97048020).

Almost surely, 2^387897119 is an apocalyptic number.

387897119 is a deficient number, since it is larger than the sum of its proper divisors (294961).

387897119 is a wasteful number, since it uses less digits than its factorization.

387897119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294960.

The product of its digits is 762048, while the sum is 53.

The square root of 387897119 is about 19695.1039347346. The cubic root of 387897119 is about 729.2988319638.

The spelling of 387897119 in words is "three hundred eighty-seven million, eight hundred ninety-seven thousand, one hundred nineteen".