997446449 has 2 divisors, whose sum is σ = 997446450. Its totient is φ = 997446448.

The previous prime is 997446427. The next prime is 997446469. The reversal of 997446449 is 944644799.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 567630625 + 429815824 = 23825^2 + 20732^2 .

It is a cyclic number.

It is not a de Polignac number, because 997446449 - 2¹² = 997442353 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 997446394 and 997446403.

It is not a weakly prime, because it can be changed into another prime (997446409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498723224 + 498723225.

It is an arithmetic number, because the mean of its divisors is an integer number (498723225).

Almost surely, 2^997446449 is an apocalyptic number.

It is an amenable number.

997446449 is a deficient number, since it is larger than the sum of its proper divisors (1).

997446449 is an equidigital number, since it uses as much as digits as its factorization.

997446449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 56.

The square root of 997446449 is about 31582.3756072908. The cubic root of 997446449 is about 999.1480907901.

The spelling of 997446449 in words is "nine hundred ninety-seven million, four hundred forty-six thousand, four hundred forty-nine".