86221490 has 16 divisors (see below), whose sum is σ = 155430360. Its totient is φ = 34437120.

The previous prime is 86221489. The next prime is 86221511. The reversal of 86221490 is 9412268.

It can be written as a sum of positive squares in 4 ways, for example, as 41049649 + 45171841 = 6407^2 + 6721^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010 + ... + 13170.

Almost surely, 2^86221490 is an apocalyptic number.

86221490 is a deficient number, since it is larger than the sum of its proper divisors (69208870).

86221490 is a wasteful number, since it uses less digits than its factorization.

86221490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12877.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 86221490 is about 9285.5527568368. The cubic root of 86221490 is about 441.7791085892.

The spelling of 86221490 in words is "eighty-six million, two hundred twenty-one thousand, four hundred ninety".