83368421 has 4 divisors (see below), whose sum is σ = 83763744. Its totient is φ = 82973100.

The previous prime is 83368403. The next prime is 83368427. The reversal of 83368421 is 12486338.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83368421 - 2¹⁸ = 83106277 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 (83368427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197345 + ... + 197766.

It is an arithmetic number, because the mean of its divisors is an integer number (20940936).

Almost surely, 2^83368421 is an apocalyptic number.

It is an amenable number.

83368421 is a deficient number, since it is larger than the sum of its proper divisors (395323).

83368421 is a wasteful number, since it uses less digits than its factorization.

83368421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395322.

The product of its digits is 27648, while the sum is 35.

The square root of 83368421 is about 9130.6309201500. The cubic root of 83368421 is about 436.8515275664.

The spelling of 83368421 in words is "eighty-three million, three hundred sixty-eight thousand, four hundred twenty-one".