8436021 has 8 divisors (see below), whose sum is σ = 12270624. Its totient is φ = 5112720.

The previous prime is 8436017. The next prime is 8436023. The reversal of 8436021 is 1206348.

It is a happy number.

8436021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8436021 - 2² = 8436017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8435982 and 8436000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8436023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127786 + ... + 127851.

It is an arithmetic number, because the mean of its divisors is an integer number (1533828).

Almost surely, 2^8436021 is an apocalyptic number.

It is an amenable number.

8436021 is a deficient number, since it is larger than the sum of its proper divisors (3834603).

8436021 is a wasteful number, since it uses less digits than its factorization.

8436021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255651.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 8436021 is about 2904.4829143929. The cubic root of 8436021 is about 203.5694253683.

The spelling of 8436021 in words is "eight million, four hundred thirty-six thousand, twenty-one".