997297959 has 8 divisors (see below), whose sum is σ = 1519692160. Its totient is φ = 569884536.

The previous prime is 997297957. The next prime is 997297969. The reversal of 997297959 is 959792799.

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

It is not a de Polignac number, because 997297959 - 2¹ = 997297957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 997297959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997297957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23745169 + ... + 23745210.

It is an arithmetic number, because the mean of its divisors is an integer number (189961520).

Almost surely, 2^997297959 is an apocalyptic number.

997297959 is a deficient number, since it is larger than the sum of its proper divisors (522394201).

997297959 is a wasteful number, since it uses less digits than its factorization.

997297959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47490389.

The product of its digits is 28934010, while the sum is 66.

The square root of 997297959 is about 31580.0246833342. The cubic root of 997297959 is about 999.0985072216.

The spelling of 997297959 in words is "nine hundred ninety-seven million, two hundred ninety-seven thousand, nine hundred fifty-nine".