197622449 has 2 divisors, whose sum is σ = 197622450. Its totient is φ = 197622448.

The previous prime is 197622421. The next prime is 197622457. The reversal of 197622449 is 944226791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102657424 + 94965025 = 10132^2 + 9745^2 .

It is a cyclic number.

It is not a de Polignac number, because 197622449 - 2⁸ = 197622193 is a prime.

It is not a weakly prime, because it can be changed into another prime (197622409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98811224 + 98811225.

It is an arithmetic number, because the mean of its divisors is an integer number (98811225).

Almost surely, 2^197622449 is an apocalyptic number.

It is an amenable number.

197622449 is a deficient number, since it is larger than the sum of its proper divisors (1).

197622449 is an equidigital number, since it uses as much as digits as its factorization.

197622449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 197622449 is about 14057.8251874179. The cubic root of 197622449 is about 582.4769701149.

The spelling of 197622449 in words is "one hundred ninety-seven million, six hundred twenty-two thousand, four hundred forty-nine".