478372399 has 2 divisors, whose sum is σ = 478372400. Its totient is φ = 478372398.

The previous prime is 478372393. The next prime is 478372403. The reversal of 478372399 is 993273874.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478372399 - 2¹¹ = 478370351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478372393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239186199 + 239186200.

It is an arithmetic number, because the mean of its divisors is an integer number (239186200).

Almost surely, 2^478372399 is an apocalyptic number.

478372399 is a deficient number, since it is larger than the sum of its proper divisors (1).

478372399 is an equidigital number, since it uses as much as digits as its factorization.

478372399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 52.

The square root of 478372399 is about 21871.7260178524. The cubic root of 478372399 is about 782.0875479502.

The spelling of 478372399 in words is "four hundred seventy-eight million, three hundred seventy-two thousand, three hundred ninety-nine".