408206555349 has 4 divisors (see below), whose sum is σ = 544275407136. Its totient is φ = 272137703564.

The previous prime is 408206555297. The next prime is 408206555353. The reversal of 408206555349 is 943555602804.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 408206555349 - 2¹⁶ = 408206489813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408206555249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68034425889 + ... + 68034425894.

It is an arithmetic number, because the mean of its divisors is an integer number (136068851784).

Almost surely, 2^408206555349 is an apocalyptic number.

It is an amenable number.

408206555349 is a deficient number, since it is larger than the sum of its proper divisors (136068851787).

408206555349 is a wasteful number, since it uses less digits than its factorization.

408206555349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136068851786.

The product of its (nonzero) digits is 5184000, while the sum is 51.

The spelling of 408206555349 in words is "four hundred eight billion, two hundred six million, five hundred fifty-five thousand, three hundred forty-nine".