387401 has 4 divisors (see below), whose sum is σ = 442752. Its totient is φ = 332052.

The previous prime is 387397. The next prime is 387403. The reversal of 387401 is 104783.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104783 = 7 ⋅14969.

It is not a de Polignac number, because 387401 - 2² = 387397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (387403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27665 + ... + 27678.

It is an arithmetic number, because the mean of its divisors is an integer number (110688).

2³⁸⁷⁴⁰¹ is an apocalyptic number.

It is an amenable number.

387401 is a deficient number, since it is larger than the sum of its proper divisors (55351).

387401 is an equidigital number, since it uses as much as digits as its factorization.

387401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55350.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 387401 is about 622.4154561063. The cubic root of 387401 is about 72.8987775798.

The spelling of 387401 in words is "three hundred eighty-seven thousand, four hundred one".