622139 has 16 divisors (see below), whose sum is σ = 761856. Its totient is φ = 496800.

The previous prime is 622133. The next prime is 622151. The reversal of 622139 is 931226.

It is a cyclic number.

It is not a de Polignac number, because 622139 - 2⁴ = 622123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (622133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10169 + ... + 10229.

It is an arithmetic number, because the mean of its divisors is an integer number (47616).

2⁶²²¹³⁹ is an apocalyptic number.

622139 is a deficient number, since it is larger than the sum of its proper divisors (139717).

622139 is a wasteful number, since it uses less digits than its factorization.

622139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146.

The product of its digits is 648, while the sum is 23.

The square root of 622139 is about 788.7578842712. The cubic root of 622139 is about 85.3681379969.

The spelling of 622139 in words is "six hundred twenty-two thousand, one hundred thirty-nine".