4249405 has 8 divisors (see below), whose sum is σ = 5399352. Its totient is φ = 3199488.

The previous prime is 4249391. The next prime is 4249409. The reversal of 4249405 is 5049424.

It can be written as a sum of positive squares in 4 ways, for example, as 1172889 + 3076516 = 1083^2 + 1754^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4249405 - 2⁷ = 4249277 is a prime.

It is a Duffinian number.

4249405 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4249409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24912 + ... + 25081.

It is an arithmetic number, because the mean of its divisors is an integer number (674919).

Almost surely, 2^4249405 is an apocalyptic number.

It is an amenable number.

4249405 is a deficient number, since it is larger than the sum of its proper divisors (1149947).

4249405 is a wasteful number, since it uses less digits than its factorization.

4249405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50015.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 4249405 is about 2061.4084990608. The cubic root of 4249405 is about 161.9730306169.

The spelling of 4249405 in words is "four million, two hundred forty-nine thousand, four hundred five".