86019945 has 32 divisors (see below), whose sum is σ = 155329920. Its totient is φ = 40266240.

The previous prime is 86019937. The next prime is 86019961. The reversal of 86019945 is 54991068.

It is not a de Polignac number, because 86019945 - 2³ = 86019937 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 86019897 and 86019906.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4204 + ... + 13773.

It is an arithmetic number, because the mean of its divisors is an integer number (4854060).

Almost surely, 2^86019945 is an apocalyptic number.

It is an amenable number.

86019945 is a deficient number, since it is larger than the sum of its proper divisors (69309975).

86019945 is a wasteful number, since it uses less digits than its factorization.

86019945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18025.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 86019945 is about 9274.6937954846. The cubic root of 86019945 is about 441.4346166024.

The spelling of 86019945 in words is "eighty-six million, nineteen thousand, nine hundred forty-five".