409081930 has 16 divisors (see below), whose sum is σ = 736774344. Its totient is φ = 163537920.

The previous prime is 409081927. The next prime is 409081943. The reversal of 409081930 is 39180904.

It can be written as a sum of positive squares in 4 ways, for example, as 64496961 + 344584969 = 8031^2 + 18563^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7810 + ... + 29650.

Almost surely, 2^409081930 is an apocalyptic number.

409081930 is a deficient number, since it is larger than the sum of its proper divisors (327692414).

409081930 is a wasteful number, since it uses less digits than its factorization.

409081930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23721.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 409081930 is about 20225.7739036112. The cubic root of 409081930 is about 742.3409734739.

The spelling of 409081930 in words is "four hundred nine million, eighty-one thousand, nine hundred thirty".