409399652 has 6 divisors (see below), whose sum is σ = 716449398. Its totient is φ = 204699824.

The previous prime is 409399597. The next prime is 409399673. The reversal of 409399652 is 256993904.

It can be written as a sum of positive squares in only one way, i.e., 407070976 + 2328676 = 20176^2 + 1526^2 .

It is a super-2 number, since 2×409399652² = 335216150115442208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 409399597 and 409399606.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51174953 + ... + 51174960.

It is an arithmetic number, because the mean of its divisors is an integer number (119408233).

Almost surely, 2^409399652 is an apocalyptic number.

It is an amenable number.

409399652 is a deficient number, since it is larger than the sum of its proper divisors (307049746).

409399652 is a wasteful number, since it uses less digits than its factorization.

409399652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102349917 (or 102349915 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 47.

The square root of 409399652 is about 20233.6267633857. The cubic root of 409399652 is about 742.5331085993.

The spelling of 409399652 in words is "four hundred nine million, three hundred ninety-nine thousand, six hundred fifty-two".