409994474 has 24 divisors (see below), whose sum is σ = 655575168. Its totient is φ = 192265920.

The previous prime is 409994471. The next prime is 409994477. The reversal of 409994474 is 474499904.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (409994471) and next prime (409994477).

It is not an unprimeable number, because it can be changed into a prime (409994471) 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 11 ways as a sum of consecutive naturals, for example, 190247 + ... + 192389.

It is an arithmetic number, because the mean of its divisors is an integer number (27315632).

Almost surely, 2^409994474 is an apocalyptic number.

409994474 is a deficient number, since it is larger than the sum of its proper divisors (245580694).

409994474 is a wasteful number, since it uses less digits than its factorization.

409994474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510 (or 2493 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 409994474 is about 20248.3202760130. The cubic root of 409994474 is about 742.8925465340.

The spelling of 409994474 in words is "four hundred nine million, nine hundred ninety-four thousand, four hundred seventy-four".