4251989 has 8 divisors (see below), whose sum is σ = 5145408. Its totient is φ = 3430080.

The previous prime is 4251971. The next prime is 4252019. The reversal of 4251989 is 9891524.

4251989 = 337² + 338² + ... + 370².

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

It is a cyclic number.

It is not a de Polignac number, because 4251989 - 2⁸ = 4251733 is a prime.

It is a super-2 number, since 2×4251989² = 36158820912242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4251589) 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, 17747 + ... + 17984.

It is an arithmetic number, because the mean of its divisors is an integer number (643176).

Almost surely, 2^4251989 is an apocalyptic number.

It is an amenable number.

4251989 is a deficient number, since it is larger than the sum of its proper divisors (893419).

4251989 is a wasteful number, since it uses less digits than its factorization.

4251989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35755.

The product of its digits is 25920, while the sum is 38.

The square root of 4251989 is about 2062.0351597390. The cubic root of 4251989 is about 162.0058550950.

The spelling of 4251989 in words is "four million, two hundred fifty-one thousand, nine hundred eighty-nine".