477375421 has 2 divisors, whose sum is σ = 477375422. Its totient is φ = 477375420.

The previous prime is 477375377. The next prime is 477375449. The reversal of 477375421 is 124573774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 477204025 + 171396 = 21845^2 + 414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-477375421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (477375491) 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, 238687710 + 238687711.

It is an arithmetic number, because the mean of its divisors is an integer number (238687711).

Almost surely, 2^477375421 is an apocalyptic number.

It is an amenable number.

477375421 is a deficient number, since it is larger than the sum of its proper divisors (1).

477375421 is an equidigital number, since it uses as much as digits as its factorization.

477375421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 164640, while the sum is 40.

The square root of 477375421 is about 21848.9226507853. The cubic root of 477375421 is about 781.5438527144.

The spelling of 477375421 in words is "four hundred seventy-seven million, three hundred seventy-five thousand, four hundred twenty-one".