7722477149 has 2 divisors, whose sum is σ = 7722477150. Its totient is φ = 7722477148.

The previous prime is 7722477143. The next prime is 7722477179. The reversal of 7722477149 is 9417742277.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5793949924 + 1928527225 = 76118^2 + 43915^2 .

It is a cyclic number.

It is not a de Polignac number, because 7722477149 - 2²⁰ = 7721428573 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7722477097 and 7722477106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7722477143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3861238574 + 3861238575.

It is an arithmetic number, because the mean of its divisors is an integer number (3861238575).

Almost surely, 2^7722477149 is an apocalyptic number.

It is an amenable number.

7722477149 is a deficient number, since it is larger than the sum of its proper divisors (1).

7722477149 is an equidigital number, since it uses as much as digits as its factorization.

7722477149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1382976, while the sum is 50.

The square root of 7722477149 is about 87877.6259863681. The cubic root of 7722477149 is about 1976.6003926256.

The spelling of 7722477149 in words is "seven billion, seven hundred twenty-two million, four hundred seventy-seven thousand, one hundred forty-nine".