86409444 has 48 divisors (see below), whose sum is σ = 227545920. Its totient is φ = 25280640.

The previous prime is 86409409. The next prime is 86409457. The reversal of 86409444 is 44490468.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7459 + ... + 15114.

It is an arithmetic number, because the mean of its divisors is an integer number (4740540).

Almost surely, 2^86409444 is an apocalyptic number.

It is an amenable number.

86409444 is an abundant number, since it is smaller than the sum of its proper divisors (141136476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86409444 is a wasteful number, since it uses less digits than its factorization.

86409444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22620 (or 22618 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 86409444 is about 9295.6680233322. The cubic root of 86409444 is about 442.0998866544.

The spelling of 86409444 in words is "eighty-six million, four hundred nine thousand, four hundred forty-four".