86461139 has 4 divisors (see below), whose sum is σ = 89250240. Its totient is φ = 83672040.

The previous prime is 86461121. The next prime is 86461181. The reversal of 86461139 is 93116468.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86461139 is a prime.

It is a super-3 number, since 3×86461139³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (86461189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1394504 + ... + 1394565.

It is an arithmetic number, because the mean of its divisors is an integer number (22312560).

Almost surely, 2^86461139 is an apocalyptic number.

86461139 is a deficient number, since it is larger than the sum of its proper divisors (2789101).

86461139 is a wasteful number, since it uses less digits than its factorization.

86461139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789100.

The product of its digits is 31104, while the sum is 38.

The square root of 86461139 is about 9298.4482038671. The cubic root of 86461139 is about 442.1880321028.

The spelling of 86461139 in words is "eighty-six million, four hundred sixty-one thousand, one hundred thirty-nine".