7880387 has 2 divisors, whose sum is σ = 7880388. Its totient is φ = 7880386.

The previous prime is 7880359. The next prime is 7880393. The reversal of 7880387 is 7830887.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7880387 - 2¹² = 7876291 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7880317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3940193 + 3940194.

It is an arithmetic number, because the mean of its divisors is an integer number (3940194).

Almost surely, 2^7880387 is an apocalyptic number.

7880387 is a deficient number, since it is larger than the sum of its proper divisors (1).

7880387 is an equidigital number, since it uses as much as digits as its factorization.

7880387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 7880387 is about 2807.2027001982. The cubic root of 7880387 is about 198.9982155173.

The spelling of 7880387 in words is "seven million, eight hundred eighty thousand, three hundred eighty-seven".