86239145 has 4 divisors (see below), whose sum is σ = 103486980. Its totient is φ = 68991312.

The previous prime is 86239093. The next prime is 86239151. The reversal of 86239145 is 54193268.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 43454464 + 42784681 = 6592^2 + 6541^2 .

It is a cyclic number.

It is not a de Polignac number, because 86239145 - 2¹⁰ = 86238121 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 86239099 and 86239108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8623910 + ... + 8623919.

It is an arithmetic number, because the mean of its divisors is an integer number (25871745).

Almost surely, 2^86239145 is an apocalyptic number.

It is an amenable number.

86239145 is a deficient number, since it is larger than the sum of its proper divisors (17247835).

86239145 is a wasteful number, since it uses less digits than its factorization.

86239145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17247834.

The product of its digits is 51840, while the sum is 38.

The square root of 86239145 is about 9286.5033785597. The cubic root of 86239145 is about 441.8092599194.

The spelling of 86239145 in words is "eighty-six million, two hundred thirty-nine thousand, one hundred forty-five".