403489249 has 4 divisors (see below), whose sum is σ = 406434564. Its totient is φ = 400543936.

The previous prime is 403489193. The next prime is 403489279. The reversal of 403489249 is 942984304.

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 72795024 + 330694225 = 8532^2 + 18185^2 .

It is a cyclic number.

It is not a de Polignac number, because 403489249 - 2²¹ = 401392097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403489279) 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, 1472452 + ... + 1472725.

It is an arithmetic number, because the mean of its divisors is an integer number (101608641).

Almost surely, 2^403489249 is an apocalyptic number.

It is an amenable number.

403489249 is a deficient number, since it is larger than the sum of its proper divisors (2945315).

403489249 is a wasteful number, since it uses less digits than its factorization.

403489249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945314.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 403489249 is about 20087.0418180478. The cubic root of 403489249 is about 738.9425174242.

The spelling of 403489249 in words is "four hundred three million, four hundred eighty-nine thousand, two hundred forty-nine".