83703989 has 2 divisors, whose sum is σ = 83703990. Its totient is φ = 83703988.

The previous prime is 83703979. The next prime is 83704003. The reversal of 83703989 is 98930738.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48539089 + 35164900 = 6967^2 + 5930^2 .

It is a cyclic number.

It is not a de Polignac number, because 83703989 - 2⁴ = 83703973 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83703979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41851994 + 41851995.

It is an arithmetic number, because the mean of its divisors is an integer number (41851995).

Almost surely, 2^83703989 is an apocalyptic number.

It is an amenable number.

83703989 is a deficient number, since it is larger than the sum of its proper divisors (1).

83703989 is an equidigital number, since it uses as much as digits as its factorization.

83703989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 83703989 is about 9148.9884140270. The cubic root of 83703989 is about 437.4368696936.

The spelling of 83703989 in words is "eighty-three million, seven hundred three thousand, nine hundred eighty-nine".