3720278447 has 2 divisors, whose sum is σ = 3720278448. Its totient is φ = 3720278446.

The previous prime is 3720278423. The next prime is 3720278477. The reversal of 3720278447 is 7448720273.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3720278447 - 2⁶ = 3720278383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3720278398 and 3720278407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3720278477) 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, 1860139223 + 1860139224.

It is an arithmetic number, because the mean of its divisors is an integer number (1860139224).

Almost surely, 2^3720278447 is an apocalyptic number.

3720278447 is a deficient number, since it is larger than the sum of its proper divisors (1).

3720278447 is an equidigital number, since it uses as much as digits as its factorization.

3720278447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 526848, while the sum is 44.

The square root of 3720278447 is about 60994.0853444004. The cubic root of 3720278447 is about 1549.5008378102.

The spelling of 3720278447 in words is "three billion, seven hundred twenty million, two hundred seventy-eight thousand, four hundred forty-seven".