4371221749 has 2 divisors, whose sum is σ = 4371221750. Its totient is φ = 4371221748.

The previous prime is 4371221671. The next prime is 4371221761. The reversal of 4371221749 is 9471221734.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3879047524 + 492174225 = 62282^2 + 22185^2 .

It is a cyclic number.

It is not a de Polignac number, because 4371221749 - 2¹³ = 4371213557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4371221779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2185610874 + 2185610875.

It is an arithmetic number, because the mean of its divisors is an integer number (2185610875).

Almost surely, 2^4371221749 is an apocalyptic number.

It is an amenable number.

4371221749 is a deficient number, since it is larger than the sum of its proper divisors (1).

4371221749 is an equidigital number, since it uses as much as digits as its factorization.

4371221749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 40.

The square root of 4371221749 is about 66115.2157146901. The cubic root of 4371221749 is about 1635.0622038949.

The spelling of 4371221749 in words is "four billion, three hundred seventy-one million, two hundred twenty-one thousand, seven hundred forty-nine".