478338437 has 2 divisors, whose sum is σ = 478338438. Its totient is φ = 478338436.

The previous prime is 478338403. The next prime is 478338439. The reversal of 478338437 is 734833874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 322238401 + 156100036 = 17951^2 + 12494^2 .

It is a cyclic number.

It is not a de Polignac number, because 478338437 - 2⁶ = 478338373 is a prime.

Together with 478338439, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 478338391 and 478338400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478338439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239169218 + 239169219.

It is an arithmetic number, because the mean of its divisors is an integer number (239169219).

Almost surely, 2^478338437 is an apocalyptic number.

It is an amenable number.

478338437 is a deficient number, since it is larger than the sum of its proper divisors (1).

478338437 is an equidigital number, since it uses as much as digits as its factorization.

478338437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 47.

The square root of 478338437 is about 21870.9496135856. The cubic root of 478338437 is about 782.0690394368.

The spelling of 478338437 in words is "four hundred seventy-eight million, three hundred thirty-eight thousand, four hundred thirty-seven".