86840253 has 12 divisors (see below), whose sum is σ = 125959548. Its totient is φ = 57651840.

The previous prime is 86840183. The next prime is 86840261. The reversal of 86840253 is 35204868.

It can be written as a sum of positive squares in 2 ways, for example, as 66292164 + 20548089 = 8142^2 + 4533^2 .

It is not a de Polignac number, because 86840253 - 2⁹ = 86839741 is a prime.

It is a super-2 number, since 2×86840253² = 15082459082208018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86840353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17850 + ... + 22187.

It is an arithmetic number, because the mean of its divisors is an integer number (10496629).

Almost surely, 2^86840253 is an apocalyptic number.

It is an amenable number.

86840253 is a deficient number, since it is larger than the sum of its proper divisors (39119295).

86840253 is a wasteful number, since it uses less digits than its factorization.

86840253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40284 (or 40281 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 86840253 is about 9318.8117804793. The cubic root of 86840253 is about 442.8333904262.

It can be divided in two parts, 8684025 and 3, that added together give a triangular number (8684028 = T₄₁₆₇).

The spelling of 86840253 in words is "eighty-six million, eight hundred forty thousand, two hundred fifty-three".