80836421 has 8 divisors (see below), whose sum is σ = 84755904. Its totient is φ = 76950720.

The previous prime is 80836417. The next prime is 80836429. The reversal of 80836421 is 12463808.

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

It is a cyclic number.

It is not a de Polignac number, because 80836421 - 2² = 80836417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80836429) 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, 3476 + ... + 13181.

It is an arithmetic number, because the mean of its divisors is an integer number (10594488).

Almost surely, 2^80836421 is an apocalyptic number.

It is an amenable number.

80836421 is a deficient number, since it is larger than the sum of its proper divisors (3919483).

80836421 is a wasteful number, since it uses less digits than its factorization.

80836421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16891.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 80836421 is about 8990.9076849893. The cubic root of 80836421 is about 432.3834133946.

The spelling of 80836421 in words is "eighty million, eight hundred thirty-six thousand, four hundred twenty-one".