1022397 has 8 divisors (see below), whose sum is σ = 1443456. Its totient is φ = 641472.

The previous prime is 1022389. The next prime is 1022429. The reversal of 1022397 is 7932201.

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

It is not a de Polignac number, because 1022397 - 2³ = 1022389 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022377) 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, 9973 + ... + 10074.

It is an arithmetic number, because the mean of its divisors is an integer number (180432).

2^1022397 is an apocalyptic number.

1022397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1022397 is a deficient number, since it is larger than the sum of its proper divisors (421059).

1022397 is a wasteful number, since it uses less digits than its factorization.

1022397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20067.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 1022397 is about 1011.1364893030. The cubic root of 1022397 is about 100.7410613813.

Adding to 1022397 its reverse (7932201), we get a palindrome (8954598).

The spelling of 1022397 in words is "one million, twenty-two thousand, three hundred ninety-seven".