387700789 has 16 divisors (see below), whose sum is σ = 452995200. Its totient is φ = 331679040.

The previous prime is 387700727. The next prime is 387700829. The reversal of 387700789 is 987007783.

It is a happy number.

It is not a de Polignac number, because 387700789 - 2²⁵ = 354146357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387700889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301542 + ... + 302824.

It is an arithmetic number, because the mean of its divisors is an integer number (28312200).

Almost surely, 2^387700789 is an apocalyptic number.

It is an amenable number.

387700789 is a deficient number, since it is larger than the sum of its proper divisors (65294411).

387700789 is an equidigital number, since it uses as much as digits as its factorization.

387700789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185 (or 2171 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 387700789 is about 19690.1190702342. The cubic root of 387700789 is about 729.1757689175.

The spelling of 387700789 in words is "three hundred eighty-seven million, seven hundred thousand, seven hundred eighty-nine".