5499198421 has 2 divisors, whose sum is σ = 5499198422. Its totient is φ = 5499198420.

The previous prime is 5499198401. The next prime is 5499198451. The reversal of 5499198421 is 1248919945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5210674225 + 288524196 = 72185^2 + 16986^2 .

It is a cyclic number.

It is not a de Polignac number, because 5499198421 - 2⁵ = 5499198389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5499198401) 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, 2749599210 + 2749599211.

It is an arithmetic number, because the mean of its divisors is an integer number (2749599211).

Almost surely, 2^5499198421 is an apocalyptic number.

It is an amenable number.

5499198421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5499198421 is an equidigital number, since it uses as much as digits as its factorization.

5499198421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 52.

The square root of 5499198421 is about 74156.5804295209. The cubic root of 5499198421 is about 1765.0884103729.

The spelling of 5499198421 in words is "five billion, four hundred ninety-nine million, one hundred ninety-eight thousand, four hundred twenty-one".