6408408455 has 4 divisors (see below), whose sum is σ = 7690090152. Its totient is φ = 5126726760.

The previous prime is 6408408449. The next prime is 6408408463. The reversal of 6408408455 is 5548048046.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5548048046 = 2 ⋅2774024023.

It is not a de Polignac number, because 6408408455 - 2³² = 2113441159 is a prime.

It is a super-2 number, since 2×6408408455² = 82135397852230974050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640840841 + ... + 640840850.

It is an arithmetic number, because the mean of its divisors is an integer number (1922522538).

Almost surely, 2^6408408455 is an apocalyptic number.

6408408455 is a deficient number, since it is larger than the sum of its proper divisors (1281681697).

6408408455 is a wasteful number, since it uses less digits than its factorization.

6408408455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281681696.

The product of its (nonzero) digits is 614400, while the sum is 44.

The square root of 6408408455 is about 80052.5355938211. The cubic root of 6408408455 is about 1857.4482732598.

The spelling of 6408408455 in words is "six billion, four hundred eight million, four hundred eight thousand, four hundred fifty-five".