4247489 has 4 divisors (see below), whose sum is σ = 4362324. Its totient is φ = 4132656.

The previous prime is 4247471. The next prime is 4247513. The reversal of 4247489 is 9847424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1982464 + 2265025 = 1408^2 + 1505^2 .

It is a cyclic number.

It is not a de Polignac number, because 4247489 - 2¹⁶ = 4181953 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4247429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57362 + ... + 57435.

It is an arithmetic number, because the mean of its divisors is an integer number (1090581).

Almost surely, 2^4247489 is an apocalyptic number.

It is an amenable number.

4247489 is a deficient number, since it is larger than the sum of its proper divisors (114835).

4247489 is a wasteful number, since it uses less digits than its factorization.

4247489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114834.

The product of its digits is 64512, while the sum is 38.

The square root of 4247489 is about 2060.9437158739. The cubic root of 4247489 is about 161.9486831313.

The spelling of 4247489 in words is "four million, two hundred forty-seven thousand, four hundred eighty-nine".