7999487 has 2 divisors, whose sum is σ = 7999488. Its totient is φ = 7999486.

The previous prime is 7999477. The next prime is 7999501. The reversal of 7999487 is 7849997.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7999487 - 2¹² = 7995391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7999417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3999743 + 3999744.

It is an arithmetic number, because the mean of its divisors is an integer number (3999744).

Almost surely, 2^7999487 is an apocalyptic number.

7999487 is a deficient number, since it is larger than the sum of its proper divisors (1).

7999487 is an equidigital number, since it uses as much as digits as its factorization.

7999487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 53.

The square root of 7999487 is about 2828.3364368476. The cubic root of 7999487 is about 199.9957249086.

The spelling of 7999487 in words is "seven million, nine hundred ninety-nine thousand, four hundred eighty-seven".