83509903 has 2 divisors, whose sum is σ = 83509904. Its totient is φ = 83509902.

The previous prime is 83509901. The next prime is 83509963. The reversal of 83509903 is 30990538.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83509903 - 2¹ = 83509901 is a prime.

Together with 83509901, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83509901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41754951 + 41754952.

It is an arithmetic number, because the mean of its divisors is an integer number (41754952).

Almost surely, 2^83509903 is an apocalyptic number.

83509903 is a deficient number, since it is larger than the sum of its proper divisors (1).

83509903 is an equidigital number, since it uses as much as digits as its factorization.

83509903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 83509903 is about 9138.3752932346. The cubic root of 83509903 is about 437.0985103633.

The spelling of 83509903 in words is "eighty-three million, five hundred nine thousand, nine hundred three".