6139699 has 2 divisors, whose sum is σ = 6139700. Its totient is φ = 6139698.

The previous prime is 6139697. The next prime is 6139723. The reversal of 6139699 is 9969316.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6139699 - 2¹ = 6139697 is a prime.

Together with 6139697, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6139691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3069849 + 3069850.

It is an arithmetic number, because the mean of its divisors is an integer number (3069850).

Almost surely, 2^6139699 is an apocalyptic number.

6139699 is a deficient number, since it is larger than the sum of its proper divisors (1).

6139699 is an equidigital number, since it uses as much as digits as its factorization.

6139699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78732, while the sum is 43.

The square root of 6139699 is about 2477.8416010714. The cubic root of 6139699 is about 183.1115308463. Note that the first 3 decimals are identical.

The spelling of 6139699 in words is "six million, one hundred thirty-nine thousand, six hundred ninety-nine".