197394403 has 2 divisors, whose sum is σ = 197394404. Its totient is φ = 197394402.

The previous prime is 197394397. The next prime is 197394427. The reversal of 197394403 is 304493791.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197394403 - 2⁹ = 197393891 is a prime.

It is not a weakly prime, because it can be changed into another prime (197394103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98697201 + 98697202.

It is an arithmetic number, because the mean of its divisors is an integer number (98697202).

Almost surely, 2^197394403 is an apocalyptic number.

197394403 is a deficient number, since it is larger than the sum of its proper divisors (1).

197394403 is an equidigital number, since it uses as much as digits as its factorization.

197394403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 197394403 is about 14049.7118475789. The cubic root of 197394403 is about 582.2528345302.

It can be divided in two parts, 19739 and 4403, that added together give a palindrome (24142).

The spelling of 197394403 in words is "one hundred ninety-seven million, three hundred ninety-four thousand, four hundred three".