6399154079 has 2 divisors, whose sum is σ = 6399154080. Its totient is φ = 6399154078.

The previous prime is 6399154067. The next prime is 6399154087. The reversal of 6399154079 is 9704519936.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6399154079 - 2⁴ = 6399154063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6399154079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6399154009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3199577039 + 3199577040.

It is an arithmetic number, because the mean of its divisors is an integer number (3199577040).

Almost surely, 2^6399154079 is an apocalyptic number.

6399154079 is a deficient number, since it is larger than the sum of its proper divisors (1).

6399154079 is an equidigital number, since it uses as much as digits as its factorization.

6399154079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1837080, while the sum is 53.

The square root of 6399154079 is about 79994.7128190357. The cubic root of 6399154079 is about 1856.5537294769.

The spelling of 6399154079 in words is "six billion, three hundred ninety-nine million, one hundred fifty-four thousand, seventy-nine".