387455 has 4 divisors (see below), whose sum is σ = 464952. Its totient is φ = 309960.

The previous prime is 387449. The next prime is 387463. The reversal of 387455 is 554783.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 554783 = 23 ⋅24121.

It is not a de Polignac number, because 387455 - 2⁸ = 387199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38741 + ... + 38750.

It is an arithmetic number, because the mean of its divisors is an integer number (116238).

2³⁸⁷⁴⁵⁵ is an apocalyptic number.

387455 is a deficient number, since it is larger than the sum of its proper divisors (77497).

387455 is an equidigital number, since it uses as much as digits as its factorization.

387455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77496.

The product of its digits is 16800, while the sum is 32.

The square root of 387455 is about 622.4588339802. The cubic root of 387455 is about 72.9021645536.

The spelling of 387455 in words is "three hundred eighty-seven thousand, four hundred fifty-five".