1022439 has 8 divisors (see below), whose sum is σ = 1487232. Its totient is φ = 619640.

The previous prime is 1022429. The next prime is 1022443. The reversal of 1022439 is 9342201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1022439 - 2⁸ = 1022183 is a prime.

1022439 is a lucky number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15459 + ... + 15524.

It is an arithmetic number, because the mean of its divisors is an integer number (185904).

2^1022439 is an apocalyptic number.

1022439 is a deficient number, since it is larger than the sum of its proper divisors (464793).

1022439 is a wasteful number, since it uses less digits than its factorization.

1022439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30997.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1022439 is about 1011.1572577992. The cubic root of 1022439 is about 100.7424408411.

The spelling of 1022439 in words is "one million, twenty-two thousand, four hundred thirty-nine".