1391922 has 24 divisors (see below), whose sum is σ = 3446976. Its totient is φ = 397656.

The previous prime is 1391917. The next prime is 1391927. The reversal of 1391922 is 2291931.

It is an interprime number because it is at equal distance from previous prime (1391917) and next prime (1391927).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1391927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5398 + ... + 5649.

It is an arithmetic number, because the mean of its divisors is an integer number (143624).

2^1391922 is an apocalyptic number.

1391922 is an abundant number, since it is smaller than the sum of its proper divisors (2055054).

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

1391922 is a wasteful number, since it uses less digits than its factorization.

1391922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11062 (or 11059 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 1391922 is about 1179.7974402413. The cubic root of 1391922 is about 111.6533178766.

Subtracting 1391922 from its reverse (2291931), we obtain a palindrome (900009).

The spelling of 1391922 in words is "one million, three hundred ninety-one thousand, nine hundred twenty-two".