409254249 has 16 divisors (see below), whose sum is σ = 570379392. Its totient is φ = 260523648.

The previous prime is 409254233. The next prime is 409254257. The reversal of 409254249 is 942452904.

It is not a de Polignac number, because 409254249 - 2⁴ = 409254233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (409254259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37767 + ... + 47379.

It is an arithmetic number, because the mean of its divisors is an integer number (35648712).

Almost surely, 2^409254249 is an apocalyptic number.

It is an amenable number.

409254249 is a deficient number, since it is larger than the sum of its proper divisors (161125143).

409254249 is a wasteful number, since it uses less digits than its factorization.

409254249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10256.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 409254249 is about 20230.0333415444. The cubic root of 409254249 is about 742.4451917961.

The spelling of 409254249 in words is "four hundred nine million, two hundred fifty-four thousand, two hundred forty-nine".