6447954199 has 2 divisors, whose sum is σ = 6447954200. Its totient is φ = 6447954198.

The previous prime is 6447954193. The next prime is 6447954203. The reversal of 6447954199 is 9914597446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6447954199 - 2²⁹ = 5911083287 is a prime.

It is a super-2 number, since 2×6447954199² = 83152226704803463202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6447954193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3223977099 + 3223977100.

It is an arithmetic number, because the mean of its divisors is an integer number (3223977100).

Almost surely, 2^6447954199 is an apocalyptic number.

6447954199 is a deficient number, since it is larger than the sum of its proper divisors (1).

6447954199 is an equidigital number, since it uses as much as digits as its factorization.

6447954199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9797760, while the sum is 58.

The square root of 6447954199 is about 80299.1544102427. The cubic root of 6447954199 is about 1861.2611594669.

The spelling of 6447954199 in words is "six billion, four hundred forty-seven million, nine hundred fifty-four thousand, one hundred ninety-nine".