9854421457 has 4 divisors (see below), whose sum is σ = 9861076836. Its totient is φ = 9847766080.

The previous prime is 9854421449. The next prime is 9854421491. The reversal of 9854421457 is 7541244589.

9854421457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7541244589 = 881 ⋅8559869.

It can be written as a sum of positive squares in 2 ways, for example, as 4452759441 + 5401662016 = 66729^2 + 73496^2 .

It is a cyclic number.

It is not a de Polignac number, because 9854421457 - 2³ = 9854421449 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 9854421457.

It is not an unprimeable number, because it can be changed into a prime (9854421257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3325468 + ... + 3328429.

It is an arithmetic number, because the mean of its divisors is an integer number (2465269209).

Almost surely, 2^9854421457 is an apocalyptic number.

It is an amenable number.

9854421457 is a deficient number, since it is larger than the sum of its proper divisors (6655379).

9854421457 is a wasteful number, since it uses less digits than its factorization.

9854421457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6655378.

The product of its digits is 1612800, while the sum is 49.

The square root of 9854421457 is about 99269.4386858312. The cubic root of 9854421457 is about 2143.9288945084.

The spelling of 9854421457 in words is "nine billion, eight hundred fifty-four million, four hundred twenty-one thousand, four hundred fifty-seven".