387443 has 6 divisors (see below), whose sum is σ = 450756. Its totient is φ = 332052.

The previous prime is 387437. The next prime is 387449. The reversal of 387443 is 344783.

It is an interprime number because it is at equal distance from previous prime (387437) and next prime (387449).

It is not a de Polignac number, because 387443 - 2⁸ = 387187 is a prime.

It is a super-2 number, since 2×387443² = 300224156498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3905 + ... + 4002.

It is an arithmetic number, because the mean of its divisors is an integer number (75126).

2³⁸⁷⁴⁴³ is an apocalyptic number.

387443 is a deficient number, since it is larger than the sum of its proper divisors (63313).

387443 is an equidigital number, since it uses as much as digits as its factorization.

387443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7921 (or 7914 counting only the distinct ones).

The product of its digits is 8064, while the sum is 29.

The square root of 387443 is about 622.4491947139. The cubic root of 387443 is about 72.9014119199.

The spelling of 387443 in words is "three hundred eighty-seven thousand, four hundred forty-three".