838955473 has 2 divisors, whose sum is σ = 838955474. Its totient is φ = 838955472.

The previous prime is 838955459. The next prime is 838955479. The reversal of 838955473 is 374559838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 797893009 + 41062464 = 28247^2 + 6408^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-838955473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 838955473.

It is not a weakly prime, because it can be changed into another prime (838955479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419477736 + 419477737.

It is an arithmetic number, because the mean of its divisors is an integer number (419477737).

Almost surely, 2^838955473 is an apocalyptic number.

It is an amenable number.

838955473 is a deficient number, since it is larger than the sum of its proper divisors (1).

838955473 is an equidigital number, since it uses as much as digits as its factorization.

838955473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3628800, while the sum is 52.

The square root of 838955473 is about 28964.7280843442. The cubic root of 838955473 is about 943.1475418821.

The spelling of 838955473 in words is "eight hundred thirty-eight million, nine hundred fifty-five thousand, four hundred seventy-three".