447665122969 has 2 divisors, whose sum is σ = 447665122970. Its totient is φ = 447665122968.

The previous prime is 447665122913. The next prime is 447665122999. The reversal of 447665122969 is 969221566744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 414690921225 + 32974201744 = 643965^2 + 181588^2 .

It is a cyclic number.

It is not a de Polignac number, because 447665122969 - 2¹⁹ = 447664598681 is a prime.

It is a super-2 number, since 2×447665122969² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (447665122999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223832561484 + 223832561485.

It is an arithmetic number, because the mean of its divisors is an integer number (223832561485).

Almost surely, 2^447665122969 is an apocalyptic number.

It is an amenable number.

447665122969 is a deficient number, since it is larger than the sum of its proper divisors (1).

447665122969 is an equidigital number, since it uses as much as digits as its factorization.

447665122969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39191040, while the sum is 61.

It can be divided in two parts, 44766512 and 2969, that added together give a square (44769481 = 6691²).

The spelling of 447665122969 in words is "four hundred forty-seven billion, six hundred sixty-five million, one hundred twenty-two thousand, nine hundred sixty-nine".