409981395 has 16 divisors (see below), whose sum is σ = 656222112. Its totient is φ = 218572800.

The previous prime is 409981391. The next prime is 409981409. The reversal of 409981395 is 593189904.

It is not a de Polignac number, because 409981395 - 2² = 409981391 is a prime.

It is a super-2 number, since 2×409981395² = 336169488492292050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (409981391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69169 + ... + 74861.

It is an arithmetic number, because the mean of its divisors is an integer number (41013882).

Almost surely, 2^409981395 is an apocalyptic number.

409981395 is a deficient number, since it is larger than the sum of its proper divisors (246240717).

409981395 is a wasteful number, since it uses less digits than its factorization.

409981395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10502.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 409981395 is about 20247.9973083760. The cubic root of 409981395 is about 742.8846469195.

The spelling of 409981395 in words is "four hundred nine million, nine hundred eighty-one thousand, three hundred ninety-five".