86344784 has 10 divisors (see below), whose sum is σ = 167293050. Its totient is φ = 43172384.

The previous prime is 86344763. The next prime is 86344793. The reversal of 86344784 is 48744368.

It can be written as a sum of positive squares in only one way, i.e., 81504784 + 4840000 = 9028^2 + 2200^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2698259 + ... + 2698290.

It is an arithmetic number, because the mean of its divisors is an integer number (16729305).

Almost surely, 2^86344784 is an apocalyptic number.

It is an amenable number.

86344784 is a deficient number, since it is larger than the sum of its proper divisors (80948266).

86344784 is a wasteful number, since it uses less digits than its factorization.

86344784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5396557 (or 5396551 counting only the distinct ones).

The product of its digits is 516096, while the sum is 44.

The square root of 86344784 is about 9292.1894083149. The cubic root of 86344784 is about 441.9895850074.

The spelling of 86344784 in words is "eighty-six million, three hundred forty-four thousand, seven hundred eighty-four".