1223776471 has 2 divisors, whose sum is σ = 1223776472. Its totient is φ = 1223776470.

The previous prime is 1223776447. The next prime is 1223776493. The reversal of 1223776471 is 1746773221.

It is a strong prime.

It is an emirp because it is prime and its reverse (1746773221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1223776471 - 2¹³ = 1223768279 is a prime.

It is a super-3 number, since 3×1223776471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223773471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611888235 + 611888236.

It is an arithmetic number, because the mean of its divisors is an integer number (611888236).

Almost surely, 2^1223776471 is an apocalyptic number.

1223776471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223776471 is an equidigital number, since it uses as much as digits as its factorization.

1223776471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98784, while the sum is 40.

The square root of 1223776471 is about 34982.5166476056. The cubic root of 1223776471 is about 1069.6311276897.

The spelling of 1223776471 in words is "one billion, two hundred twenty-three million, seven hundred seventy-six thousand, four hundred seventy-one".