498021983 has 2 divisors, whose sum is σ = 498021984. Its totient is φ = 498021982.

The previous prime is 498021949. The next prime is 498022003. The reversal of 498021983 is 389120894.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-498021983 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (498021943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249010991 + 249010992.

It is an arithmetic number, because the mean of its divisors is an integer number (249010992).

Almost surely, 2^498021983 is an apocalyptic number.

498021983 is a deficient number, since it is larger than the sum of its proper divisors (1).

498021983 is an equidigital number, since it uses as much as digits as its factorization.

498021983 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 498021983 is about 22316.4061398783. The cubic root of 498021983 is about 792.6525073454.

The spelling of 498021983 in words is "four hundred ninety-eight million, twenty-one thousand, nine hundred eighty-three".