8541917421 has 16 divisors (see below), whose sum is σ = 11703608448. Its totient is φ = 5537592000.

The previous prime is 8541917401. The next prime is 8541917437. The reversal of 8541917421 is 1247191458.

It is not a de Polignac number, because 8541917421 - 2⁵ = 8541917389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8541917401) 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 15 ways as a sum of consecutive naturals, for example, 185896 + ... + 227246.

It is an arithmetic number, because the mean of its divisors is an integer number (731475528).

Almost surely, 2^8541917421 is an apocalyptic number.

It is an amenable number.

8541917421 is a deficient number, since it is larger than the sum of its proper divisors (3161691027).

8541917421 is a wasteful number, since it uses less digits than its factorization.

8541917421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43252.

The product of its digits is 80640, while the sum is 42.

The square root of 8541917421 is about 92422.4941288645. The cubic root of 8541917421 is about 2044.1768054295.

The spelling of 8541917421 in words is "eight billion, five hundred forty-one million, nine hundred seventeen thousand, four hundred twenty-one".