83644049 has 2 divisors, whose sum is σ = 83644050. Its totient is φ = 83644048.

The previous prime is 83644037. The next prime is 83644081. The reversal of 83644049 is 94044638.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71707024 + 11937025 = 8468^2 + 3455^2 .

It is a cyclic number.

It is not a de Polignac number, because 83644049 - 2²⁰ = 82595473 is a prime.

It is a super-3 number, since 3×83644049³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83644009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41822024 + 41822025.

It is an arithmetic number, because the mean of its divisors is an integer number (41822025).

Almost surely, 2^83644049 is an apocalyptic number.

It is an amenable number.

83644049 is a deficient number, since it is larger than the sum of its proper divisors (1).

83644049 is an equidigital number, since it uses as much as digits as its factorization.

83644049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 83644049 is about 9145.7120553842. The cubic root of 83644049 is about 437.3324293221.

The spelling of 83644049 in words is "eighty-three million, six hundred forty-four thousand, forty-nine".