997289393746 has 8 divisors (see below), whose sum is σ = 1497628242864. Its totient is φ = 498079979460.

The previous prime is 997289393743. The next prime is 997289393773. The reversal of 997289393746 is 647393982799.

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

It is a super-3 number, since 3×997289393746³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (997289393743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282356500 + ... + 282360031.

It is an arithmetic number, because the mean of its divisors is an integer number (187203530358).

Almost surely, 2^997289393746 is an apocalyptic number.

997289393746 is a deficient number, since it is larger than the sum of its proper divisors (500338849118).

997289393746 is a wasteful number, since it uses less digits than its factorization.

997289393746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564717416.

The product of its digits is 1111065984, while the sum is 76.

The spelling of 997289393746 in words is "nine hundred ninety-seven billion, two hundred eighty-nine million, three hundred ninety-three thousand, seven hundred forty-six".