997951327 has 2 divisors, whose sum is σ = 997951328. Its totient is φ = 997951326.

The previous prime is 997951291. The next prime is 997951337. The reversal of 997951327 is 723159799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 997951327 - 2¹¹ = 997949279 is a prime.

It is a super-2 number, since 2×997951327² = 1991813702122121858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997951337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498975663 + 498975664.

It is an arithmetic number, because the mean of its divisors is an integer number (498975664).

Almost surely, 2^997951327 is an apocalyptic number.

997951327 is a deficient number, since it is larger than the sum of its proper divisors (1).

997951327 is an equidigital number, since it uses as much as digits as its factorization.

997951327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1071630, while the sum is 52.

The square root of 997951327 is about 31590.3676300229. The cubic root of 997951327 is about 999.3166421284.

The spelling of 997951327 in words is "nine hundred ninety-seven million, nine hundred fifty-one thousand, three hundred twenty-seven".