477881813 has 2 divisors, whose sum is σ = 477881814. Its totient is φ = 477881812.

The previous prime is 477881801. The next prime is 477881857. The reversal of 477881813 is 318188774.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335365969 + 142515844 = 18313^2 + 11938^2 .

It is a cyclic number.

It is not a de Polignac number, because 477881813 - 2⁴ = 477881797 is a prime.

It is a super-3 number, since 3×477881813³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (477881513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238940906 + 238940907.

It is an arithmetic number, because the mean of its divisors is an integer number (238940907).

Almost surely, 2^477881813 is an apocalyptic number.

It is an amenable number.

477881813 is a deficient number, since it is larger than the sum of its proper divisors (1).

477881813 is an equidigital number, since it uses as much as digits as its factorization.

477881813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 301056, while the sum is 47.

The square root of 477881813 is about 21860.5080682037. The cubic root of 477881813 is about 781.8201046804.

The spelling of 477881813 in words is "four hundred seventy-seven million, eight hundred eighty-one thousand, eight hundred thirteen".