387712287 has 12 divisors (see below), whose sum is σ = 560802424. Its totient is φ = 258117840.

The previous prime is 387712267. The next prime is 387712301. The reversal of 387712287 is 782217783.

It is a happy number.

It is not a de Polignac number, because 387712287 - 2¹⁸ = 387450143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387712207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22789 + ... + 35982.

Almost surely, 2^387712287 is an apocalyptic number.

387712287 is a deficient number, since it is larger than the sum of its proper divisors (173090137).

387712287 is a wasteful number, since it uses less digits than its factorization.

387712287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59510 (or 59507 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The square root of 387712287 is about 19690.4110419260. The cubic root of 387712287 is about 729.1829772083.

The spelling of 387712287 in words is "three hundred eighty-seven million, seven hundred twelve thousand, two hundred eighty-seven".