387289361 has 8 divisors (see below), whose sum is σ = 389724264. Its totient is φ = 384862720.

The previous prime is 387289337. The next prime is 387289379. The reversal of 387289361 is 163982783.

It can be written as a sum of positive squares in 4 ways, for example, as 3129361 + 384160000 = 1769^2 + 19600^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 387289361 - 2⁶ = 387289297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387289381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110171 + ... + 113631.

It is an arithmetic number, because the mean of its divisors is an integer number (48715533).

Almost surely, 2^387289361 is an apocalyptic number.

It is an amenable number.

387289361 is a deficient number, since it is larger than the sum of its proper divisors (2434903).

387289361 is a wasteful number, since it uses less digits than its factorization.

387289361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4131.

The product of its digits is 435456, while the sum is 47.

The square root of 387289361 is about 19679.6687218053. The cubic root of 387289361 is about 728.9177438970.

The spelling of 387289361 in words is "three hundred eighty-seven million, two hundred eighty-nine thousand, three hundred sixty-one".