83184421 has 2 divisors, whose sum is σ = 83184422. Its totient is φ = 83184420.

The previous prime is 83184397. The next prime is 83184443. The reversal of 83184421 is 12448138.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52780225 + 30404196 = 7265^2 + 5514^2 .

It is a cyclic number.

It is not a de Polignac number, because 83184421 - 2⁵ = 83184389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83184461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41592210 + 41592211.

It is an arithmetic number, because the mean of its divisors is an integer number (41592211).

Almost surely, 2^83184421 is an apocalyptic number.

It is an amenable number.

83184421 is a deficient number, since it is larger than the sum of its proper divisors (1).

83184421 is an equidigital number, since it uses as much as digits as its factorization.

83184421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 31.

The square root of 83184421 is about 9120.5493803827. The cubic root of 83184421 is about 436.5299034310.

The spelling of 83184421 in words is "eighty-three million, one hundred eighty-four thousand, four hundred twenty-one".