480238991 has 2 divisors, whose sum is σ = 480238992. Its totient is φ = 480238990.

The previous prime is 480238981. The next prime is 480238999. The reversal of 480238991 is 199832084.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 480238991 - 2¹⁴ = 480222607 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (480238999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240119495 + 240119496.

It is an arithmetic number, because the mean of its divisors is an integer number (240119496).

Almost surely, 2^480238991 is an apocalyptic number.

480238991 is a deficient number, since it is larger than the sum of its proper divisors (1).

480238991 is an equidigital number, since it uses as much as digits as its factorization.

480238991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 480238991 is about 21914.3558198730. The cubic root of 480238991 is about 783.1034536358.

The spelling of 480238991 in words is "four hundred eighty million, two hundred thirty-eight thousand, nine hundred ninety-one".