8278744949 has 16 divisors (see below), whose sum is σ = 8921197440. Its totient is φ = 7653772800.

The previous prime is 8278744933. The next prime is 8278744951. The reversal of 8278744949 is 9494478728.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8278744949 - 2⁴ = 8278744933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8278744891 and 8278744900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8278744909) 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 in 15 ways as a sum of consecutive naturals, for example, 1804112 + ... + 1808694.

It is an arithmetic number, because the mean of its divisors is an integer number (557574840).

Almost surely, 2^8278744949 is an apocalyptic number.

It is an amenable number.

8278744949 is a deficient number, since it is larger than the sum of its proper divisors (642452491).

8278744949 is a wasteful number, since it uses less digits than its factorization.

8278744949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6460.

The product of its digits is 32514048, while the sum is 62.

The square root of 8278744949 is about 90987.6087662490. The cubic root of 8278744949 is about 2022.9640624955.

The spelling of 8278744949 in words is "eight billion, two hundred seventy-eight million, seven hundred forty-four thousand, nine hundred forty-nine".