408399553 has 2 divisors, whose sum is σ = 408399554. Its totient is φ = 408399552.

The previous prime is 408399533. The next prime is 408399557. The reversal of 408399553 is 355993804.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391564944 + 16834609 = 19788^2 + 4103^2 .

It is a cyclic number.

It is not a de Polignac number, because 408399553 - 2²¹ = 406302401 is a prime.

It is not a weakly prime, because it can be changed into another prime (408399557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204199776 + 204199777.

It is an arithmetic number, because the mean of its divisors is an integer number (204199777).

Almost surely, 2^408399553 is an apocalyptic number.

It is an amenable number.

408399553 is a deficient number, since it is larger than the sum of its proper divisors (1).

408399553 is an equidigital number, since it uses as much as digits as its factorization.

408399553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 583200, while the sum is 46.

The square root of 408399553 is about 20208.8978670288. The cubic root of 408399553 is about 741.9279850335.

The spelling of 408399553 in words is "four hundred eight million, three hundred ninety-nine thousand, five hundred fifty-three".