1391022 has 12 divisors (see below), whose sum is σ = 3013920. Its totient is φ = 463668.

The previous prime is 1391011. The next prime is 1391023. The reversal of 1391022 is 2201931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 77279 = 1391022 / (1 + 3 + 9 + 1 + 0 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 1390986 and 1391004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38622 + ... + 38657.

It is an arithmetic number, because the mean of its divisors is an integer number (251160).

2^1391022 is an apocalyptic number.

1391022 is an abundant number, since it is smaller than the sum of its proper divisors (1622898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1391022 is a wasteful number, since it uses less digits than its factorization.

1391022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77287 (or 77284 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1391022 is about 1179.4159571585. The cubic root of 1391022 is about 111.6292481246.

Adding to 1391022 its reverse (2201931), we get a palindrome (3592953).

The spelling of 1391022 in words is "one million, three hundred ninety-one thousand, twenty-two".