86040819 has 8 divisors (see below), whose sum is σ = 127467920. Its totient is φ = 57360528.

The previous prime is 86040817. The next prime is 86040827. The reversal of 86040819 is 91804068.

It is a happy number.

It is not a de Polignac number, because 86040819 - 2¹ = 86040817 is a prime.

It is a super-2 number, since 2×86040819² = 14806045068381522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86040811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1593322 + ... + 1593375.

It is an arithmetic number, because the mean of its divisors is an integer number (15933490).

Almost surely, 2^86040819 is an apocalyptic number.

86040819 is a deficient number, since it is larger than the sum of its proper divisors (41427101).

86040819 is a wasteful number, since it uses less digits than its factorization.

86040819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186706 (or 3186700 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 86040819 is about 9275.8190473941. The cubic root of 86040819 is about 441.4703205737.

The spelling of 86040819 in words is "eighty-six million, forty thousand, eight hundred nineteen".