4378993 has 4 divisors (see below), whose sum is σ = 4569408. Its totient is φ = 4188580.

The previous prime is 4378981. The next prime is 4379003. The reversal of 4378993 is 3998734.

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.

It is a cyclic number.

It is not a de Polignac number, because 4378993 - 2⁹ = 4378481 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4378963) 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, 95173 + ... + 95218.

It is an arithmetic number, because the mean of its divisors is an integer number (1142352).

Almost surely, 2^4378993 is an apocalyptic number.

It is an amenable number.

4378993 is a deficient number, since it is larger than the sum of its proper divisors (190415).

4378993 is a wasteful number, since it uses less digits than its factorization.

4378993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190414.

The product of its digits is 163296, while the sum is 43.

The square root of 4378993 is about 2092.6043582101. The cubic root of 4378993 is about 163.6030579709.

The spelling of 4378993 in words is "four million, three hundred seventy-eight thousand, nine hundred ninety-three".