4249969 has 2 divisors, whose sum is σ = 4249970. Its totient is φ = 4249968.

The previous prime is 4249967. The next prime is 4249981. The reversal of 4249969 is 9699424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3629025 + 620944 = 1905^2 + 788^2 .

It is a cyclic number.

It is not a de Polignac number, because 4249969 - 2¹ = 4249967 is a prime.

It is a super-2 number, since 2×4249969² = 36124473001922, which contains 22 as substring.

Together with 4249967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4249961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2124984 + 2124985.

It is an arithmetic number, because the mean of its divisors is an integer number (2124985).

Almost surely, 2^4249969 is an apocalyptic number.

It is an amenable number.

4249969 is a deficient number, since it is larger than the sum of its proper divisors (1).

4249969 is an equidigital number, since it uses as much as digits as its factorization.

4249969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 43.

The square root of 4249969 is about 2061.5452941907. The cubic root of 4249969 is about 161.9801962278.

The spelling of 4249969 in words is "four million, two hundred forty-nine thousand, nine hundred sixty-nine".