401244197 has 2 divisors, whose sum is σ = 401244198. Its totient is φ = 401244196.

The previous prime is 401244143. The next prime is 401244241. The reversal of 401244197 is 791442104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318051556 + 83192641 = 17834^2 + 9121^2 .

It is a cyclic number.

It is not a de Polignac number, because 401244197 - 2²² = 397049893 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 (401244097) 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, 200622098 + 200622099.

It is an arithmetic number, because the mean of its divisors is an integer number (200622099).

Almost surely, 2^401244197 is an apocalyptic number.

It is an amenable number.

401244197 is a deficient number, since it is larger than the sum of its proper divisors (1).

401244197 is an equidigital number, since it uses as much as digits as its factorization.

401244197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 401244197 is about 20031.0807746362. The cubic root of 401244197 is about 737.5694525036.

The spelling of 401244197 in words is "four hundred one million, two hundred forty-four thousand, one hundred ninety-seven".