7920259 has 2 divisors, whose sum is σ = 7920260. Its totient is φ = 7920258.

The previous prime is 7920251. The next prime is 7920287. The reversal of 7920259 is 9520297.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7920259 - 2³ = 7920251 is a prime.

It is not a weakly prime, because it can be changed into another prime (7920251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3960129 + 3960130.

It is an arithmetic number, because the mean of its divisors is an integer number (3960130).

Almost surely, 2^7920259 is an apocalyptic number.

7920259 is a deficient number, since it is larger than the sum of its proper divisors (1).

7920259 is an equidigital number, since it uses as much as digits as its factorization.

7920259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 7920259 is about 2814.2954713391. The cubic root of 7920259 is about 199.3332715020. Note that the first 3 decimals are identical.

The spelling of 7920259 in words is "seven million, nine hundred twenty thousand, two hundred fifty-nine".