409640272 has 10 divisors (see below), whose sum is σ = 793678058. Its totient is φ = 204820128.

The previous prime is 409640261. The next prime is 409640311. The reversal of 409640272 is 272046904.

It can be written as a sum of positive squares in only one way, i.e., 350288656 + 59351616 = 18716^2 + 7704^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12801243 + ... + 12801274.

Almost surely, 2^409640272 is an apocalyptic number.

It is an amenable number.

409640272 is a deficient number, since it is larger than the sum of its proper divisors (384037786).

409640272 is a wasteful number, since it uses less digits than its factorization.

409640272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25602525 (or 25602519 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 409640272 is about 20239.5719322322. The cubic root of 409640272 is about 742.6785519119.

The spelling of 409640272 in words is "four hundred nine million, six hundred forty thousand, two hundred seventy-two".