498580991 has 2 divisors, whose sum is σ = 498580992. Its totient is φ = 498580990.

The previous prime is 498580987. The next prime is 498581081. The reversal of 498580991 is 199085894.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 498580991 - 2² = 498580987 is a prime.

It is a Sophie Germain 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 (498580921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249290495 + 249290496.

It is an arithmetic number, because the mean of its divisors is an integer number (249290496).

Almost surely, 2^498580991 is an apocalyptic number.

498580991 is a deficient number, since it is larger than the sum of its proper divisors (1).

498580991 is an equidigital number, since it uses as much as digits as its factorization.

498580991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 53.

The square root of 498580991 is about 22328.9272245668. The cubic root of 498580991 is about 792.9489690980.

The spelling of 498580991 in words is "four hundred ninety-eight million, five hundred eighty thousand, nine hundred ninety-one".