498949391 has 2 divisors, whose sum is σ = 498949392. Its totient is φ = 498949390.

The previous prime is 498949351. The next prime is 498949457. The reversal of 498949391 is 193949894.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-498949391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (498949301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249474695 + 249474696.

It is an arithmetic number, because the mean of its divisors is an integer number (249474696).

Almost surely, 2^498949391 is an apocalyptic number.

498949391 is a deficient number, since it is larger than the sum of its proper divisors (1).

498949391 is an equidigital number, since it uses as much as digits as its factorization.

498949391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 56.

The square root of 498949391 is about 22337.1750899705. The cubic root of 498949391 is about 793.1442235538.

The spelling of 498949391 in words is "four hundred ninety-eight million, nine hundred forty-nine thousand, three hundred ninety-one".