409012442 has 12 divisors (see below), whose sum is σ = 623917098. Its totient is φ = 201043800.

The previous prime is 409012423. The next prime is 409012451. The reversal of 409012442 is 244210904.

It can be written as a sum of positive squares in only one way, i.e., 405659881 + 3352561 = 20141^2 + 1831^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 222467 + ... + 224297.

Almost surely, 2^409012442 is an apocalyptic number.

409012442 is a deficient number, since it is larger than the sum of its proper divisors (214904656).

409012442 is an frugal number, since it uses more digits than its factorization.

409012442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3725 (or 1894 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 409012442 is about 20224.0560224699. The cubic root of 409012442 is about 742.2989389353.

The spelling of 409012442 in words is "four hundred nine million, twelve thousand, four hundred forty-two".