86944069 has 4 divisors (see below), whose sum is σ = 92058444. Its totient is φ = 81829696.

The previous prime is 86944063. The next prime is 86944087. The reversal of 86944069 is 96044968.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51696100 + 35247969 = 7190^2 + 5937^2 .

It is a cyclic number.

It is not a de Polignac number, because 86944069 - 2³ = 86944061 is a prime.

It is a super-2 number, since 2×86944069² = 15118542268553522, 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 (86944061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2557162 + ... + 2557195.

It is an arithmetic number, because the mean of its divisors is an integer number (23014611).

Almost surely, 2^86944069 is an apocalyptic number.

It is an amenable number.

86944069 is a deficient number, since it is larger than the sum of its proper divisors (5114375).

86944069 is a wasteful number, since it uses less digits than its factorization.

86944069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5114374.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 86944069 is about 9324.3803547474. The cubic root of 86944069 is about 443.0097866702.

The spelling of 86944069 in words is "eighty-six million, nine hundred forty-four thousand, sixty-nine".