7900514221 has 2 divisors, whose sum is σ = 7900514222. Its totient is φ = 7900514220.

The previous prime is 7900514189. The next prime is 7900514233. The reversal of 7900514221 is 1224150097.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7879225225 + 21288996 = 88765^2 + 4614^2 .

It is an emirp because it is prime and its reverse (1224150097) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7900514221 - 2⁵ = 7900514189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7900517221) 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, 3950257110 + 3950257111.

It is an arithmetic number, because the mean of its divisors is an integer number (3950257111).

Almost surely, 2^7900514221 is an apocalyptic number.

It is an amenable number.

7900514221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7900514221 is an equidigital number, since it uses as much as digits as its factorization.

7900514221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 7900514221 is about 88884.8368452122. The cubic root of 7900514221 is about 1991.6749129619.

The spelling of 7900514221 in words is "seven billion, nine hundred million, five hundred fourteen thousand, two hundred twenty-one".