8477912421 has 12 divisors (see below), whose sum is σ = 13359134880. Its totient is φ = 5138128680.

The previous prime is 8477912411. The next prime is 8477912449. The reversal of 8477912421 is 1242197748.

It is not a de Polignac number, because 8477912421 - 2⁹ = 8477911909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8477912411) 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 11 ways as a sum of consecutive naturals, for example, 42817641 + ... + 42817838.

It is an arithmetic number, because the mean of its divisors is an integer number (1113261240).

Almost surely, 2^8477912421 is an apocalyptic number.

It is an amenable number.

8477912421 is a deficient number, since it is larger than the sum of its proper divisors (4881222459).

8477912421 is a wasteful number, since it uses less digits than its factorization.

8477912421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85635496 (or 85635493 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 8477912421 is about 92075.5799384397. The cubic root of 8477912421 is about 2039.0582944510.

The spelling of 8477912421 in words is "eight billion, four hundred seventy-seven million, nine hundred twelve thousand, four hundred twenty-one".