409440351 has 4 divisors (see below), whose sum is σ = 545920472. Its totient is φ = 272960232.

The previous prime is 409440349. The next prime is 409440389. The reversal of 409440351 is 153044904.

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

It is not a de Polignac number, because 409440351 - 2¹ = 409440349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409440301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68240056 + ... + 68240061.

It is an arithmetic number, because the mean of its divisors is an integer number (136480118).

Almost surely, 2^409440351 is an apocalyptic number.

409440351 is a deficient number, since it is larger than the sum of its proper divisors (136480121).

409440351 is a wasteful number, since it uses less digits than its factorization.

409440351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136480120.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 409440351 is about 20234.6324651574. The cubic root of 409440351 is about 742.5577132071.

The spelling of 409440351 in words is "four hundred nine million, four hundred forty thousand, three hundred fifty-one".