394220053 has 2 divisors, whose sum is σ = 394220054. Its totient is φ = 394220052.

The previous prime is 394220041. The next prime is 394220077. The reversal of 394220053 is 350022493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 387026929 + 7193124 = 19673^2 + 2682^2 .

It is a cyclic number.

It is not a de Polignac number, because 394220053 - 2⁹ = 394219541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394220153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197110026 + 197110027.

It is an arithmetic number, because the mean of its divisors is an integer number (197110027).

Almost surely, 2^394220053 is an apocalyptic number.

It is an amenable number.

394220053 is a deficient number, since it is larger than the sum of its proper divisors (1).

394220053 is an equidigital number, since it uses as much as digits as its factorization.

394220053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 394220053 is about 19854.9755225233. The cubic root of 394220053 is about 733.2401495693.

The spelling of 394220053 in words is "three hundred ninety-four million, two hundred twenty thousand, fifty-three".