8419478957 has 4 divisors (see below), whose sum is σ = 8526054720. Its totient is φ = 8312903196.

The previous prime is 8419478941. The next prime is 8419478959. The reversal of 8419478957 is 7598749148.

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 8419478957 - 2⁴ = 8419478941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8419478957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8419478959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53287763 + ... + 53287920.

It is an arithmetic number, because the mean of its divisors is an integer number (2131513680).

Almost surely, 2^8419478957 is an apocalyptic number.

It is an amenable number.

8419478957 is a deficient number, since it is larger than the sum of its proper divisors (106575763).

8419478957 is a wasteful number, since it uses less digits than its factorization.

8419478957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106575762.

The product of its digits is 20321280, while the sum is 62.

The square root of 8419478957 is about 91757.7187870318. The cubic root of 8419478957 is about 2034.3627975188.

The spelling of 8419478957 in words is "eight billion, four hundred nineteen million, four hundred seventy-eight thousand, nine hundred fifty-seven".