4249491 has 4 divisors (see below), whose sum is σ = 5665992. Its totient is φ = 2832992.

The previous prime is 4249481. The next prime is 4249501. The reversal of 4249491 is 1949424.

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

It is an interprime number because it is at equal distance from previous prime (4249481) and next prime (4249501).

It is a cyclic number.

It is not a de Polignac number, because 4249491 - 2⁵ = 4249459 is a prime.

It is a super-3 number, since 3×4249491³ (a number of 21 digits) contains 333 as substring.

It is a D-number.

4249491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4249451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 708246 + ... + 708251.

It is an arithmetic number, because the mean of its divisors is an integer number (1416498).

Almost surely, 2^4249491 is an apocalyptic number.

4249491 is a deficient number, since it is larger than the sum of its proper divisors (1416501).

4249491 is a wasteful number, since it uses less digits than its factorization.

4249491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416500.

The product of its digits is 10368, while the sum is 33.

The square root of 4249491 is about 2061.4293584792. The cubic root of 4249491 is about 161.9741232865.

The spelling of 4249491 in words is "four million, two hundred forty-nine thousand, four hundred ninety-one".