6449974229 has 2 divisors, whose sum is σ = 6449974230. Its totient is φ = 6449974228.

The previous prime is 6449974207. The next prime is 6449974241. The reversal of 6449974229 is 9224799446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6166960900 + 283013329 = 78530^2 + 16823^2 .

It is a cyclic number.

It is not a de Polignac number, because 6449974229 - 2²⁸ = 6181538773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6449970229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3224987114 + 3224987115.

It is an arithmetic number, because the mean of its divisors is an integer number (3224987115).

Almost surely, 2^6449974229 is an apocalyptic number.

It is an amenable number.

6449974229 is a deficient number, since it is larger than the sum of its proper divisors (1).

6449974229 is an equidigital number, since it uses as much as digits as its factorization.

6449974229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 56.

The square root of 6449974229 is about 80311.7315776469. The cubic root of 6449974229 is about 1861.4555059063.

The spelling of 6449974229 in words is "six billion, four hundred forty-nine million, nine hundred seventy-four thousand, two hundred twenty-nine".