478494031 has 2 divisors, whose sum is σ = 478494032. Its totient is φ = 478494030.

The previous prime is 478493947. The next prime is 478494041. The reversal of 478494031 is 130494874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478494031 - 2¹¹ = 478491983 is a prime.

It is a super-2 number, since 2×478494031² = 457913075405257922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478494041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239247015 + 239247016.

It is an arithmetic number, because the mean of its divisors is an integer number (239247016).

Almost surely, 2^478494031 is an apocalyptic number.

478494031 is a deficient number, since it is larger than the sum of its proper divisors (1).

478494031 is an equidigital number, since it uses as much as digits as its factorization.

478494031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 478494031 is about 21874.5064172886. The cubic root of 478494031 is about 782.1538274231.

The spelling of 478494031 in words is "four hundred seventy-eight million, four hundred ninety-four thousand, thirty-one".