409019930 has 24 divisors (see below), whose sum is σ = 809253396. Its totient is φ = 148734080.

The previous prime is 409019911. The next prime is 409019951. The reversal of 409019930 is 39910904.

It can be written as a sum of positive squares in 2 ways, for example, as 344362249 + 64657681 = 18557^2 + 8041^2 .

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 167807 + ... + 170226.

Almost surely, 2^409019930 is an apocalyptic number.

409019930 is a deficient number, since it is larger than the sum of its proper divisors (400233466).

409019930 is a wasteful number, since it uses less digits than its factorization.

409019930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338062 (or 338051 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 409019930 is about 20224.2411476920. The cubic root of 409019930 is about 742.3034687898.

The spelling of 409019930 in words is "four hundred nine million, nineteen thousand, nine hundred thirty".