1246889022469 has 2 divisors, whose sum is σ = 1246889022470. Its totient is φ = 1246889022468.

The previous prime is 1246889022451. The next prime is 1246889022499. The reversal of 1246889022469 is 9642209886421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1245596619969 + 1292402500 = 1116063^2 + 35950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1246889022469 is a prime.

It is a super-2 number, since 2×1246889022469² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1246889022499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623444511234 + 623444511235.

It is an arithmetic number, because the mean of its divisors is an integer number (623444511235).

Almost surely, 2^{1246889022469} is an apocalyptic number.

It is an amenable number.

1246889022469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1246889022469 is an equidigital number, since it uses as much as digits as its factorization.

1246889022469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23887872, while the sum is 61.

The spelling of 1246889022469 in words is "one trillion, two hundred forty-six billion, eight hundred eighty-nine million, twenty-two thousand, four hundred sixty-nine".