5428404221 has 2 divisors, whose sum is σ = 5428404222. Its totient is φ = 5428404220.

The previous prime is 5428404217. The next prime is 5428404251. The reversal of 5428404221 is 1224048245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3515304100 + 1913100121 = 59290^2 + 43739^2 .

It is a cyclic number.

It is not a de Polignac number, because 5428404221 - 2² = 5428404217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5428404251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2714202110 + 2714202111.

It is an arithmetic number, because the mean of its divisors is an integer number (2714202111).

Almost surely, 2^5428404221 is an apocalyptic number.

It is an amenable number.

5428404221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5428404221 is an equidigital number, since it uses as much as digits as its factorization.

5428404221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20480, while the sum is 32.

The square root of 5428404221 is about 73677.7050470493. The cubic root of 5428404221 is about 1757.4813557737.

The spelling of 5428404221 in words is "five billion, four hundred twenty-eight million, four hundred four thousand, two hundred twenty-one".