997043830 has 8 divisors (see below), whose sum is σ = 1794678912. Its totient is φ = 398817528.

The previous prime is 997043797. The next prime is 997043833. The reversal of 997043830 is 38340799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997043833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49852182 + ... + 49852201.

It is an arithmetic number, because the mean of its divisors is an integer number (224334864).

Almost surely, 2^997043830 is an apocalyptic number.

997043830 is a deficient number, since it is larger than the sum of its proper divisors (797635082).

997043830 is a wasteful number, since it uses less digits than its factorization.

997043830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99704390.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 997043830 is about 31576.0008550798. Note that the first 3 decimals coincide. The cubic root of 997043830 is about 999.0136374087.

The spelling of 997043830 in words is "nine hundred ninety-seven million, forty-three thousand, eight hundred thirty".