4000249 has 4 divisors (see below), whose sum is σ = 4363920. Its totient is φ = 3636580.

The previous prime is 4000237. The next prime is 4000261. The reversal of 4000249 is 9420004.

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 an interprime number because it is at equal distance from previous prime (4000237) and next prime (4000261).

It is a cyclic number.

It is not a de Polignac number, because 4000249 - 2¹³ = 3992057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4000649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181819 + ... + 181840.

It is an arithmetic number, because the mean of its divisors is an integer number (1090980).

Almost surely, 2^4000249 is an apocalyptic number.

It is an amenable number.

4000249 is a deficient number, since it is larger than the sum of its proper divisors (363671).

4000249 is a wasteful number, since it uses less digits than its factorization.

4000249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363670.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 4000249 is about 2000.0622490313. The cubic root of 4000249 is about 158.7433989857.

The spelling of 4000249 in words is "four million, two hundred forty-nine", and thus it is an aban number.