985520383 has 2 divisors, whose sum is σ = 985520384. Its totient is φ = 985520382.

The previous prime is 985520359. The next prime is 985520461. The reversal of 985520383 is 383025589.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 985520383 - 2⁵ = 985520351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985520083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492760191 + 492760192.

It is an arithmetic number, because the mean of its divisors is an integer number (492760192).

Almost surely, 2^985520383 is an apocalyptic number.

985520383 is a deficient number, since it is larger than the sum of its proper divisors (1).

985520383 is an equidigital number, since it uses as much as digits as its factorization.

985520383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 985520383 is about 31392.9989488102. The cubic root of 985520383 is about 995.1499762987.

The spelling of 985520383 in words is "nine hundred eighty-five million, five hundred twenty thousand, three hundred eighty-three".