86530919 has 4 divisors (see below), whose sum is σ = 86602896. Its totient is φ = 86458944.

The previous prime is 86530909. The next prime is 86530933. The reversal of 86530919 is 91903568.

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-86530919 is a prime.

It is a super-2 number, since 2×86530919² = 14975199885969122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86530909) 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, 34154 + ... + 36599.

It is an arithmetic number, because the mean of its divisors is an integer number (21650724).

Almost surely, 2^86530919 is an apocalyptic number.

86530919 is a deficient number, since it is larger than the sum of its proper divisors (71977).

86530919 is a wasteful number, since it uses less digits than its factorization.

86530919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71976.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 86530919 is about 9302.1996860958. The cubic root of 86530919 is about 442.3069586866.

The spelling of 86530919 in words is "eighty-six million, five hundred thirty thousand, nine hundred nineteen".