409653428 has 12 divisors (see below), whose sum is σ = 717982692. Its totient is φ = 204515520.

The previous prime is 409653347. The next prime is 409653467. The reversal of 409653428 is 824356904.

It can be written as a sum of positive squares in 2 ways, for example, as 141086884 + 268566544 = 11878^2 + 16388^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 74825 + ... + 80112.

It is an arithmetic number, because the mean of its divisors is an integer number (59831891).

Almost surely, 2^409653428 is an apocalyptic number.

It is an amenable number.

409653428 is a deficient number, since it is larger than the sum of its proper divisors (308329264).

409653428 is a wasteful number, since it uses less digits than its factorization.

409653428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155602 (or 155600 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 409653428 is about 20239.8969364965. The cubic root of 409653428 is about 742.6865024440.

The spelling of 409653428 in words is "four hundred nine million, six hundred fifty-three thousand, four hundred twenty-eight".