946222639 has 2 divisors, whose sum is σ = 946222640. Its totient is φ = 946222638.

The previous prime is 946222637. The next prime is 946222663. The reversal of 946222639 is 936222649.

It is a weak prime.

It is an emirp because it is prime and its reverse (936222649) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 946222639 - 2¹ = 946222637 is a prime.

It is a super-2 number, since 2×946222639² = 1790674565112248642, which contains 22 as substring.

Together with 946222637, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 946222595 and 946222604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (946222631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473111319 + 473111320.

It is an arithmetic number, because the mean of its divisors is an integer number (473111320).

Almost surely, 2^946222639 is an apocalyptic number.

946222639 is a deficient number, since it is larger than the sum of its proper divisors (1).

946222639 is an equidigital number, since it uses as much as digits as its factorization.

946222639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 43.

The square root of 946222639 is about 30760.7320946690. The cubic root of 946222639 is about 981.7429205386.

The spelling of 946222639 in words is "nine hundred forty-six million, two hundred twenty-two thousand, six hundred thirty-nine".