7958213 has 2 divisors, whose sum is σ = 7958214. Its totient is φ = 7958212.

The previous prime is 7958189. The next prime is 7958231. The reversal of 7958213 is 3128597.

Together with next prime (7958231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7606564 + 351649 = 2758^2 + 593^2 .

It is a cyclic number.

It is not a de Polignac number, because 7958213 - 2¹⁰ = 7957189 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7958263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3979106 + 3979107.

It is an arithmetic number, because the mean of its divisors is an integer number (3979107).

Almost surely, 2^7958213 is an apocalyptic number.

It is an amenable number.

7958213 is a deficient number, since it is larger than the sum of its proper divisors (1).

7958213 is an equidigital number, since it uses as much as digits as its factorization.

7958213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 7958213 is about 2821.0304854787. The cubic root of 7958213 is about 199.6511669312.

The spelling of 7958213 in words is "seven million, nine hundred fifty-eight thousand, two hundred thirteen".