946656391 has 2 divisors, whose sum is σ = 946656392. Its totient is φ = 946656390.

The previous prime is 946656317. The next prime is 946656397. The reversal of 946656391 is 193656649.

946656391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 946656391 - 2¹⁷ = 946525319 is a prime.

It is a super-2 number, since 2×946656391² = 1792316645242289762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (946656397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473328195 + 473328196.

It is an arithmetic number, because the mean of its divisors is an integer number (473328196).

Almost surely, 2^946656391 is an apocalyptic number.

946656391 is a deficient number, since it is larger than the sum of its proper divisors (1).

946656391 is an equidigital number, since it uses as much as digits as its factorization.

946656391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760, while the sum is 49.

The square root of 946656391 is about 30767.7817042438. The cubic root of 946656391 is about 981.8929091658.

The spelling of 946656391 in words is "nine hundred forty-six million, six hundred fifty-six thousand, three hundred ninety-one".