478769 has 2 divisors, whose sum is σ = 478770. Its totient is φ = 478768.

The previous prime is 478763. The next prime is 478787. The reversal of 478769 is 967874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409600 + 69169 = 640^2 + 263^2 .

It is a cyclic number.

It is not a de Polignac number, because 478769 - 2¹⁶ = 413233 is a prime.

It is a super-2 number, since 2×478769² = 458439510722, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (478763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239384 + 239385.

It is an arithmetic number, because the mean of its divisors is an integer number (239385).

2⁴⁷⁸⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

478769 is a deficient number, since it is larger than the sum of its proper divisors (1).

478769 is an equidigital number, since it uses as much as digits as its factorization.

478769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 41.

The square root of 478769 is about 691.9313549768. The cubic root of 478769 is about 78.2303621610.

The spelling of 478769 in words is "four hundred seventy-eight thousand, seven hundred sixty-nine".