83964421 has 8 divisors (see below), whose sum is σ = 87706944. Its totient is φ = 80229600.

The previous prime is 83964409. The next prime is 83964443. The reversal of 83964421 is 12446938.

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 83964421 - 2¹⁷ = 83833349 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 (83964521) 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, 40410 + ... + 42436.

It is an arithmetic number, because the mean of its divisors is an integer number (10963368).

Almost surely, 2^83964421 is an apocalyptic number.

It is an amenable number.

83964421 is a deficient number, since it is larger than the sum of its proper divisors (3742523).

83964421 is a wasteful number, since it uses less digits than its factorization.

83964421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3851.

The product of its digits is 41472, while the sum is 37.

The square root of 83964421 is about 9163.2101907574. The cubic root of 83964421 is about 437.8900723554.

The spelling of 83964421 in words is "eighty-three million, nine hundred sixty-four thousand, four hundred twenty-one".