387569 has 8 divisors (see below), whose sum is σ = 477120. Its totient is φ = 306576.

The previous prime is 387551. The next prime is 387577. The reversal of 387569 is 965783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 387569 - 2⁸ = 387313 is a prime.

It is a super-2 number, since 2×387569² = 300419459522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (387509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2039 + ... + 2220.

It is an arithmetic number, because the mean of its divisors is an integer number (59640).

2³⁸⁷⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

387569 is a deficient number, since it is larger than the sum of its proper divisors (89551).

387569 is a wasteful number, since it uses less digits than its factorization.

387569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279.

The product of its digits is 45360, while the sum is 38.

The square root of 387569 is about 622.5503995662. The cubic root of 387569 is about 72.9093137982.

The spelling of 387569 in words is "three hundred eighty-seven thousand, five hundred sixty-nine".