4378387 has 4 divisors (see below), whose sum is σ = 4715200. Its totient is φ = 4041576.

The previous prime is 4378373. The next prime is 4378399. The reversal of 4378387 is 7838734.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4378387 - 2¹⁹ = 3854099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4378307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168387 + ... + 168412.

It is an arithmetic number, because the mean of its divisors is an integer number (1178800).

Almost surely, 2^4378387 is an apocalyptic number.

4378387 is a deficient number, since it is larger than the sum of its proper divisors (336813).

4378387 is a wasteful number, since it uses less digits than its factorization.

4378387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336812.

The product of its digits is 112896, while the sum is 40.

The square root of 4378387 is about 2092.4595575542. The cubic root of 4378387 is about 163.5955107238.

The spelling of 4378387 in words is "four million, three hundred seventy-eight thousand, three hundred eighty-seven".