997079543 has 2 divisors, whose sum is σ = 997079544. Its totient is φ = 997079542.

The previous prime is 997079539. The next prime is 997079557. The reversal of 997079543 is 345970799.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 997079543 - 2² = 997079539 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997079593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498539771 + 498539772.

It is an arithmetic number, because the mean of its divisors is an integer number (498539772).

Almost surely, 2^997079543 is an apocalyptic number.

997079543 is a deficient number, since it is larger than the sum of its proper divisors (1).

997079543 is an equidigital number, since it uses as much as digits as its factorization.

997079543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2143260, while the sum is 53.

The square root of 997079543 is about 31576.5663586147. The cubic root of 997079543 is about 999.0255651184.

The spelling of 997079543 in words is "nine hundred ninety-seven million, seventy-nine thousand, five hundred forty-three".