387790785 has 48 divisors (see below), whose sum is σ = 683242560. Its totient is φ = 203448960.

The previous prime is 387790783. The next prime is 387790789. The reversal of 387790785 is 587097783.

It is not a de Polignac number, because 387790785 - 2¹ = 387790783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (387790783) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 925306 + ... + 925724.

It is an arithmetic number, because the mean of its divisors is an integer number (14234220).

Almost surely, 2^387790785 is an apocalyptic number.

It is an amenable number.

387790785 is a deficient number, since it is larger than the sum of its proper divisors (295451775).

387790785 is a wasteful number, since it uses less digits than its factorization.

387790785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 715 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 54.

The square root of 387790785 is about 19692.4042463078. The cubic root of 387790785 is about 729.2321851259.

The spelling of 387790785 in words is "three hundred eighty-seven million, seven hundred ninety thousand, seven hundred eighty-five".