387485507 has 2 divisors, whose sum is σ = 387485508. Its totient is φ = 387485506.

The previous prime is 387485503. The next prime is 387485519. The reversal of 387485507 is 705584783.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 387485507 - 2² = 387485503 is a prime.

It is not a weakly prime, because it can be changed into another prime (387485503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193742753 + 193742754.

It is an arithmetic number, because the mean of its divisors is an integer number (193742754).

Almost surely, 2^387485507 is an apocalyptic number.

387485507 is a deficient number, since it is larger than the sum of its proper divisors (1).

387485507 is an equidigital number, since it uses as much as digits as its factorization.

387485507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 940800, while the sum is 47.

The square root of 387485507 is about 19684.6515590193. The cubic root of 387485507 is about 729.0407786648.

The spelling of 387485507 in words is "three hundred eighty-seven million, four hundred eighty-five thousand, five hundred seven".