409966969 has 4 divisors (see below), whose sum is σ = 413798544. Its totient is φ = 406135396.

The previous prime is 409966961. The next prime is 409967003. The reversal of 409966969 is 969669904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 409966969 - 2³ = 409966961 is a prime.

It is a super-2 number, since 2×409966969² = 336145831342093922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409966961) 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 3 ways as a sum of consecutive naturals, for example, 1915627 + ... + 1915840.

It is an arithmetic number, because the mean of its divisors is an integer number (103449636).

Almost surely, 2^409966969 is an apocalyptic number.

It is an amenable number.

409966969 is a deficient number, since it is larger than the sum of its proper divisors (3831575).

409966969 is a wasteful number, since it uses less digits than its factorization.

409966969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831574.

The product of its (nonzero) digits is 5668704, while the sum is 58.

The square root of 409966969 is about 20247.6410724805. The cubic root of 409966969 is about 742.8759335325.

The spelling of 409966969 in words is "four hundred nine million, nine hundred sixty-six thousand, nine hundred sixty-nine".