7440476221 has 2 divisors, whose sum is σ = 7440476222. Its totient is φ = 7440476220.

The previous prime is 7440476213. The next prime is 7440476231. The reversal of 7440476221 is 1226740447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7439062500 + 1413721 = 86250^2 + 1189^2 .

It is a cyclic number.

It is not a de Polignac number, because 7440476221 - 2³ = 7440476213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7440476201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3720238110 + 3720238111.

It is an arithmetic number, because the mean of its divisors is an integer number (3720238111).

Almost surely, 2^7440476221 is an apocalyptic number.

It is an amenable number.

7440476221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7440476221 is an equidigital number, since it uses as much as digits as its factorization.

7440476221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 7440476221 is about 86258.1950947271. The cubic root of 7440476221 is about 1952.2416667173.

The spelling of 7440476221 in words is "seven billion, four hundred forty million, four hundred seventy-six thousand, two hundred twenty-one".