8811420891 has 32 divisors (see below), whose sum is σ = 14602979328. Its totient is φ = 4601750400.

The previous prime is 8811420889. The next prime is 8811420901. The reversal of 8811420891 is 1980241188.

It is not a de Polignac number, because 8811420891 - 2¹ = 8811420889 is a prime.

It is a super-2 number, since 2×8811420891² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8811420091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132211 + ... + 187356.

It is an arithmetic number, because the mean of its divisors is an integer number (456343104).

Almost surely, 2^8811420891 is an apocalyptic number.

8811420891 is a deficient number, since it is larger than the sum of its proper divisors (5791558437).

8811420891 is a wasteful number, since it uses less digits than its factorization.

8811420891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319691.

The product of its (nonzero) digits is 36864, while the sum is 42.

The square root of 8811420891 is about 93869.1690119818. The cubic root of 8811420891 is about 2065.4529931915.

The spelling of 8811420891 in words is "eight billion, eight hundred eleven million, four hundred twenty thousand, eight hundred ninety-one".