387449316 has 18 divisors (see below), whose sum is σ = 979385862. Its totient is φ = 129149760.

The previous prime is 387449291. The next prime is 387449323. The reversal of 387449316 is 613944783.

It can be written as a sum of positive squares in only one way, i.e., 293436900 + 94012416 = 17130^2 + 9696^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5381205 + ... + 5381276.

Almost surely, 2^387449316 is an apocalyptic number.

387449316 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

387449316 is an abundant number, since it is smaller than the sum of its proper divisors (591936546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

387449316 is a wasteful number, since it uses less digits than its factorization.

387449316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10762491 (or 10762486 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 387449316 is about 19683.7322680431. The cubic root of 387449316 is about 729.0180805803.

The spelling of 387449316 in words is "three hundred eighty-seven million, four hundred forty-nine thousand, three hundred sixteen".