479507993 has 2 divisors, whose sum is σ = 479507994. Its totient is φ = 479507992.

The previous prime is 479507989. The next prime is 479508017. The reversal of 479507993 is 399705974.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 459544969 + 19963024 = 21437^2 + 4468^2 .

It is a cyclic number.

It is not a de Polignac number, because 479507993 - 2² = 479507989 is a prime.

It is not a weakly prime, because it can be changed into another prime (479507293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239753996 + 239753997.

It is an arithmetic number, because the mean of its divisors is an integer number (239753997).

Almost surely, 2^479507993 is an apocalyptic number.

It is an amenable number.

479507993 is a deficient number, since it is larger than the sum of its proper divisors (1).

479507993 is an equidigital number, since it uses as much as digits as its factorization.

479507993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2143260, while the sum is 53.

The square root of 479507993 is about 21897.6709492128. The cubic root of 479507993 is about 782.7059170162.

The spelling of 479507993 in words is "four hundred seventy-nine million, five hundred seven thousand, nine hundred ninety-three".