4172489 has 2 divisors, whose sum is σ = 4172490. Its totient is φ = 4172488.

The previous prime is 4172479. The next prime is 4172513. The reversal of 4172489 is 9842714.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3822025 + 350464 = 1955^2 + 592^2 .

It is a cyclic number.

It is not a de Polignac number, because 4172489 - 2¹⁶ = 4106953 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4172479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2086244 + 2086245.

It is an arithmetic number, because the mean of its divisors is an integer number (2086245).

Almost surely, 2^4172489 is an apocalyptic number.

It is an amenable number.

4172489 is a deficient number, since it is larger than the sum of its proper divisors (1).

4172489 is an equidigital number, since it uses as much as digits as its factorization.

4172489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 35.

The square root of 4172489 is about 2042.6671290252. The cubic root of 4172489 is about 160.9898145634.

The spelling of 4172489 in words is "four million, one hundred seventy-two thousand, four hundred eighty-nine".