997905383 has 2 divisors, whose sum is σ = 997905384. Its totient is φ = 997905382.

The previous prime is 997905367. The next prime is 997905413. The reversal of 997905383 is 383509799.

It is a weak prime.

It is an emirp because it is prime and its reverse (383509799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 997905383 - 2⁴ = 997905367 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 (997905313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498952691 + 498952692.

It is an arithmetic number, because the mean of its divisors is an integer number (498952692).

Almost surely, 2^997905383 is an apocalyptic number.

997905383 is a deficient number, since it is larger than the sum of its proper divisors (1).

997905383 is an equidigital number, since it uses as much as digits as its factorization.

997905383 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1837080, while the sum is 53.

The square root of 997905383 is about 31589.6404379664. The cubic root of 997905383 is about 999.3013062741.

The spelling of 997905383 in words is "nine hundred ninety-seven million, nine hundred five thousand, three hundred eighty-three".