922639 has 2 divisors, whose sum is σ = 922640. Its totient is φ = 922638.

The previous prime is 922637. The next prime is 922643. The reversal of 922639 is 936229.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 922639 - 2¹ = 922637 is a prime.

Together with 922637, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 922639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (922631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461319 + 461320.

It is an arithmetic number, because the mean of its divisors is an integer number (461320).

2⁹²²⁶³⁹ is an apocalyptic number.

922639 is a deficient number, since it is larger than the sum of its proper divisors (1).

922639 is an equidigital number, since it uses as much as digits as its factorization.

922639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 31.

The square root of 922639 is about 960.5409933990. The cubic root of 922639 is about 97.3517888421.

The spelling of 922639 in words is "nine hundred twenty-two thousand, six hundred thirty-nine".