387745965 has 24 divisors (see below), whose sum is σ = 674264760. Its totient is φ = 206129664.

The previous prime is 387745931. The next prime is 387745993. The reversal of 387745965 is 569547783.

It can be written as a sum of positive squares in 4 ways, for example, as 4447881 + 383298084 = 2109^2 + 19578^2 .

It is not a de Polignac number, because 387745965 - 2⁹ = 387745453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 321 + ... + 27849.

It is an arithmetic number, because the mean of its divisors is an integer number (28094365).

Almost surely, 2^387745965 is an apocalyptic number.

It is an amenable number.

387745965 is a deficient number, since it is larger than the sum of its proper divisors (286518795).

387745965 is a wasteful number, since it uses less digits than its factorization.

387745965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27853 (or 27850 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The square root of 387745965 is about 19691.2662111912. The cubic root of 387745965 is about 729.2040896965.

The spelling of 387745965 in words is "three hundred eighty-seven million, seven hundred forty-five thousand, nine hundred sixty-five".