4218249 has 8 divisors (see below), whose sum is σ = 6427840. Its totient is φ = 2410416.

The previous prime is 4218241. The next prime is 4218251. The reversal of 4218249 is 9428124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4218249 - 2³ = 4218241 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4218241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100414 + ... + 100455.

It is an arithmetic number, because the mean of its divisors is an integer number (803480).

Almost surely, 2^4218249 is an apocalyptic number.

It is an amenable number.

4218249 is a deficient number, since it is larger than the sum of its proper divisors (2209591).

4218249 is a wasteful number, since it uses less digits than its factorization.

4218249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200879.

The product of its digits is 4608, while the sum is 30.

The square root of 4218249 is about 2053.8376274672. The cubic root of 4218249 is about 161.5762052220.

It can be divided in two parts, 421824 and 9, that multiplied together give a cube (3796416 = 156³).

The spelling of 4218249 in words is "four million, two hundred eighteen thousand, two hundred forty-nine".