83599121 has 2 divisors, whose sum is σ = 83599122. Its totient is φ = 83599120.

The previous prime is 83599099. The next prime is 83599151. The reversal of 83599121 is 12199538.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50410000 + 33189121 = 7100^2 + 5761^2 .

It is a cyclic number.

It is not a de Polignac number, because 83599121 - 2⁶ = 83599057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_4867049 and since 83599121 and 4867049 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (83599151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41799560 + 41799561.

It is an arithmetic number, because the mean of its divisors is an integer number (41799561).

Almost surely, 2^83599121 is an apocalyptic number.

It is an amenable number.

83599121 is a deficient number, since it is larger than the sum of its proper divisors (1).

83599121 is an equidigital number, since it uses as much as digits as its factorization.

83599121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 38.

The square root of 83599121 is about 9143.2554924381. The cubic root of 83599121 is about 437.2541133685.

The spelling of 83599121 in words is "eighty-three million, five hundred ninety-nine thousand, one hundred twenty-one".