387709089 has 16 divisors (see below), whose sum is σ = 550530432. Its totient is φ = 241856768.

The previous prime is 387709087. The next prime is 387709109. The reversal of 387709089 is 980907783.

It is a happy number.

It is not a de Polignac number, because 387709089 - 2¹ = 387709087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (387709087) 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, 13149 + ... + 30794.

It is an arithmetic number, because the mean of its divisors is an integer number (34408152).

Almost surely, 2^387709089 is an apocalyptic number.

It is an amenable number.

387709089 is a deficient number, since it is larger than the sum of its proper divisors (162821343).

387709089 is a wasteful number, since it uses less digits than its factorization.

387709089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44136.

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 387709089 is about 19690.3298347184. The cubic root of 387709089 is about 729.1809723423.

The spelling of 387709089 in words is "three hundred eighty-seven million, seven hundred nine thousand, eighty-nine".