478337987 has 2 divisors, whose sum is σ = 478337988. Its totient is φ = 478337986.

The previous prime is 478337953. The next prime is 478338011. The reversal of 478337987 is 789733874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478337987 - 2¹⁴ = 478321603 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (478337087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239168993 + 239168994.

It is an arithmetic number, because the mean of its divisors is an integer number (239168994).

Almost surely, 2^478337987 is an apocalyptic number.

478337987 is a deficient number, since it is larger than the sum of its proper divisors (1).

478337987 is an equidigital number, since it uses as much as digits as its factorization.

478337987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448, while the sum is 56.

The square root of 478337987 is about 21870.9393259640. The cubic root of 478337987 is about 782.0687941912.

The spelling of 478337987 in words is "four hundred seventy-eight million, three hundred thirty-seven thousand, nine hundred eighty-seven".