86840436 has 12 divisors (see below), whose sum is σ = 202627712. Its totient is φ = 28946808.

The previous prime is 86840423. The next prime is 86840459. The reversal of 86840436 is 63404868.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×86840436² = 15082522649340192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86840394 and 86840403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3618340 + ... + 3618363.

Almost surely, 2^86840436 is an apocalyptic number.

It is an amenable number.

86840436 is an abundant number, since it is smaller than the sum of its proper divisors (115787276).

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

86840436 is a wasteful number, since it uses less digits than its factorization.

86840436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7236710 (or 7236708 counting only the distinct ones).

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

The square root of 86840436 is about 9318.8215993225. The cubic root of 86840436 is about 442.8337014895.

The spelling of 86840436 in words is "eighty-six million, eight hundred forty thousand, four hundred thirty-six".