498021893 has 2 divisors, whose sum is σ = 498021894. Its totient is φ = 498021892.

The previous prime is 498021871. The next prime is 498021911. The reversal of 498021893 is 398120894.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 477072964 + 20948929 = 21842^2 + 4577^2 .

It is a cyclic number.

It is not a de Polignac number, because 498021893 - 2⁸ = 498021637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (498021833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249010946 + 249010947.

It is an arithmetic number, because the mean of its divisors is an integer number (249010947).

Almost surely, 2^498021893 is an apocalyptic number.

It is an amenable number.

498021893 is a deficient number, since it is larger than the sum of its proper divisors (1).

498021893 is an equidigital number, since it uses as much as digits as its factorization.

498021893 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 498021893 is about 22316.4041234245. The cubic root of 498021893 is about 792.6524595974.

Subtracting from 498021893 its reverse (398120894), we obtain a palindrome (99900999).

The spelling of 498021893 in words is "four hundred ninety-eight million, twenty-one thousand, eight hundred ninety-three".