197849429 has 2 divisors, whose sum is σ = 197849430. Its totient is φ = 197849428.

The previous prime is 197849423. The next prime is 197849437. The reversal of 197849429 is 924948791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106646929 + 91202500 = 10327^2 + 9550^2 .

It is a cyclic number.

It is not a de Polignac number, because 197849429 - 2⁸ = 197849173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197849423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98924714 + 98924715.

It is an arithmetic number, because the mean of its divisors is an integer number (98924715).

Almost surely, 2^197849429 is an apocalyptic number.

It is an amenable number.

197849429 is a deficient number, since it is larger than the sum of its proper divisors (1).

197849429 is an equidigital number, since it uses as much as digits as its factorization.

197849429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 53.

The square root of 197849429 is about 14065.8959543998. The cubic root of 197849429 is about 582.6998868241.

The spelling of 197849429 in words is "one hundred ninety-seven million, eight hundred forty-nine thousand, four hundred twenty-nine".