946220669 has 2 divisors, whose sum is σ = 946220670. Its totient is φ = 946220668.

The previous prime is 946220617. The next prime is 946220761. The reversal of 946220669 is 966022649.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 770340025 + 175880644 = 27755^2 + 13262^2 .

It is a cyclic number.

It is not a de Polignac number, because 946220669 - 2⁸ = 946220413 is a prime.

It is a super-2 number, since 2×946220669² = 1790667108885615122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (946220269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473110334 + 473110335.

It is an arithmetic number, because the mean of its divisors is an integer number (473110335).

Almost surely, 2^946220669 is an apocalyptic number.

It is an amenable number.

946220669 is a deficient number, since it is larger than the sum of its proper divisors (1).

946220669 is an equidigital number, since it uses as much as digits as its factorization.

946220669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 946220669 is about 30760.7000733078. The cubic root of 946220669 is about 981.7422392208.

The spelling of 946220669 in words is "nine hundred forty-six million, two hundred twenty thousand, six hundred sixty-nine".