7400762221 has 2 divisors, whose sum is σ = 7400762222. Its totient is φ = 7400762220.

The previous prime is 7400762129. The next prime is 7400762227. The reversal of 7400762221 is 1222670047.

7400762221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5952122500 + 1448639721 = 77150^2 + 38061^2 .

It is a cyclic number.

It is not a de Polignac number, because 7400762221 - 2⁷ = 7400762093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7400762227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3700381110 + 3700381111.

It is an arithmetic number, because the mean of its divisors is an integer number (3700381111).

Almost surely, 2^7400762221 is an apocalyptic number.

It is an amenable number.

7400762221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7400762221 is an equidigital number, since it uses as much as digits as its factorization.

7400762221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 7400762221 is about 86027.6828759208. The cubic root of 7400762221 is about 1948.7620651215.

The spelling of 7400762221 in words is "seven billion, four hundred million, seven hundred sixty-two thousand, two hundred twenty-one".