86493281 has 16 divisors (see below), whose sum is σ = 101270400. Its totient is φ = 73841040.

The previous prime is 86493257. The next prime is 86493293. The reversal of 86493281 is 18239468.

It is not a de Polignac number, because 86493281 - 2²² = 82298977 is a prime.

It is a super-2 number, since 2×86493281² = 14962175316289922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86493241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157850 + ... + 158396.

It is an arithmetic number, because the mean of its divisors is an integer number (6329400).

Almost surely, 2^86493281 is an apocalyptic number.

It is an amenable number.

86493281 is a deficient number, since it is larger than the sum of its proper divisors (14777119).

86493281 is an equidigital number, since it uses as much as digits as its factorization.

86493281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029 (or 1015 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 86493281 is about 9300.1763961766. The cubic root of 86493281 is about 442.2428199032.

The spelling of 86493281 in words is "eighty-six million, four hundred ninety-three thousand, two hundred eighty-one".