197527949 has 2 divisors, whose sum is σ = 197527950. Its totient is φ = 197527948.

The previous prime is 197527937. The next prime is 197527951. The reversal of 197527949 is 949725791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192709924 + 4818025 = 13882^2 + 2195^2 .

It is a cyclic number.

It is not a de Polignac number, because 197527949 - 2¹⁶ = 197462413 is a prime.

It is a super-2 number, since 2×197527949² = 78034581272293202, which contains 22 as substring.

Together with 197527951, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 197527949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197527919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98763974 + 98763975.

It is an arithmetic number, because the mean of its divisors is an integer number (98763975).

Almost surely, 2^197527949 is an apocalyptic number.

It is an amenable number.

197527949 is a deficient number, since it is larger than the sum of its proper divisors (1).

197527949 is an equidigital number, since it uses as much as digits as its factorization.

197527949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1428840, while the sum is 53.

The square root of 197527949 is about 14054.4636681732. The cubic root of 197527949 is about 582.3841114847.

The spelling of 197527949 in words is "one hundred ninety-seven million, five hundred twenty-seven thousand, nine hundred forty-nine".