4142989 has 2 divisors, whose sum is σ = 4142990. Its totient is φ = 4142988.

The previous prime is 4142947. The next prime is 4142993. The reversal of 4142989 is 9892414.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4141225 + 1764 = 2035^2 + 42^2 .

It is a cyclic number.

It is not a de Polignac number, because 4142989 - 2²¹ = 2045837 is a prime.

It is a super-3 number, since 3×4142989³ (a number of 21 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4142939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2071494 + 2071495.

It is an arithmetic number, because the mean of its divisors is an integer number (2071495).

Almost surely, 2^4142989 is an apocalyptic number.

It is an amenable number.

4142989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4142989 is an equidigital number, since it uses as much as digits as its factorization.

4142989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The square root of 4142989 is about 2035.4333690888. The cubic root of 4142989 is about 160.6095110906.

It can be divided in two parts, 414 and 2989, that added together give a triangular number (3403 = T₈₂).

The spelling of 4142989 in words is "four million, one hundred forty-two thousand, nine hundred eighty-nine".