997983833 has 12 divisors (see below), whose sum is σ = 1266458832. Its totient is φ = 777649320.

The previous prime is 997983809. The next prime is 997983839. The reversal of 997983833 is 338389799.

It is not a de Polignac number, because 997983833 - 2²⁰ = 996935257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997983839) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 925235 + ... + 926312.

It is an arithmetic number, because the mean of its divisors is an integer number (105538236).

Almost surely, 2^997983833 is an apocalyptic number.

It is an amenable number.

997983833 is a deficient number, since it is larger than the sum of its proper divisors (268474999).

997983833 is a wasteful number, since it uses less digits than its factorization.

997983833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851572 (or 1851565 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 59.

The square root of 997983833 is about 31590.8821181049. The cubic root of 997983833 is about 999.3274921679.

The spelling of 997983833 in words is "nine hundred ninety-seven million, nine hundred eighty-three thousand, eight hundred thirty-three".