421197349 has 2 divisors, whose sum is σ = 421197350. Its totient is φ = 421197348.

The previous prime is 421197323. The next prime is 421197373. The reversal of 421197349 is 943791124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243828225 + 177369124 = 15615^2 + 13318^2 .

It is a cyclic number.

It is not a de Polignac number, because 421197349 - 2⁹ = 421196837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421197319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210598674 + 210598675.

It is an arithmetic number, because the mean of its divisors is an integer number (210598675).

Almost surely, 2^421197349 is an apocalyptic number.

It is an amenable number.

421197349 is a deficient number, since it is larger than the sum of its proper divisors (1).

421197349 is an equidigital number, since it uses as much as digits as its factorization.

421197349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 421197349 is about 20523.0930661048. The cubic root of 421197349 is about 749.5982138326.

The spelling of 421197349 in words is "four hundred twenty-one million, one hundred ninety-seven thousand, three hundred forty-nine".