6430406457 has 4 divisors (see below), whose sum is σ = 8573875280. Its totient is φ = 4286937636.

The previous prime is 6430406449. The next prime is 6430406467. The reversal of 6430406457 is 7546040346.

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 not a de Polignac number, because 6430406457 - 2³ = 6430406449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6430406467) 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, 1071734407 + ... + 1071734412.

It is an arithmetic number, because the mean of its divisors is an integer number (2143468820).

Almost surely, 2^6430406457 is an apocalyptic number.

It is an amenable number.

6430406457 is a deficient number, since it is larger than the sum of its proper divisors (2143468823).

6430406457 is a wasteful number, since it uses less digits than its factorization.

6430406457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143468822.

The product of its (nonzero) digits is 241920, while the sum is 39.

The square root of 6430406457 is about 80189.8151700077. The cubic root of 6430406457 is about 1859.5711865556.

The spelling of 6430406457 in words is "six billion, four hundred thirty million, four hundred six thousand, four hundred fifty-seven".