478249930 has 16 divisors (see below), whose sum is σ = 861109704. Its totient is φ = 191242240.

The previous prime is 478249861. The next prime is 478249939. The reversal of 478249930 is 39942874.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 464359401 + 13890529 = 21549^2 + 3727^2 .

It is not an unprimeable number, because it can be changed into a prime (478249939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46890 + ... + 56170.

Almost surely, 2^478249930 is an apocalyptic number.

478249930 is a deficient number, since it is larger than the sum of its proper divisors (382859774).

478249930 is a wasteful number, since it uses less digits than its factorization.

478249930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14441.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 478249930 is about 21868.9261281847. The cubic root of 478249930 is about 782.0208010288.

The spelling of 478249930 in words is "four hundred seventy-eight million, two hundred forty-nine thousand, nine hundred thirty".