83980609 has 2 divisors, whose sum is σ = 83980610. Its totient is φ = 83980608.

The previous prime is 83980597. The next prime is 83980621. The reversal of 83980609 is 90608938.

It is a balanced prime because it is at equal distance from previous prime (83980597) and next prime (83980621).

It can be written as a sum of positive squares in only one way, i.e., 81721600 + 2259009 = 9040^2 + 1503^2 .

It is a cyclic number.

It is not a de Polignac number, because 83980609 - 2⁹ = 83980097 is a prime.

It is not a weakly prime, because it can be changed into another prime (83980649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41990304 + 41990305.

It is an arithmetic number, because the mean of its divisors is an integer number (41990305).

Almost surely, 2^83980609 is an apocalyptic number.

It is an amenable number.

83980609 is a deficient number, since it is larger than the sum of its proper divisors (1).

83980609 is an equidigital number, since it uses as much as digits as its factorization.

83980609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 83980609 is about 9164.0934630764. The cubic root of 83980609 is about 437.9182116907.

The spelling of 83980609 in words is "eighty-three million, nine hundred eighty thousand, six hundred nine".