1011398 has 16 divisors (see below), whose sum is σ = 1625184. Its totient is φ = 470400.

The previous prime is 1011397. The next prime is 1011407. The reversal of 1011398 is 8931101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011391) 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 7 ways as a sum of consecutive naturals, for example, 5036 + ... + 5232.

It is an arithmetic number, because the mean of its divisors is an integer number (101574).

2^1011398 is an apocalyptic number.

1011398 is a deficient number, since it is larger than the sum of its proper divisors (613786).

1011398 is a wasteful number, since it uses less digits than its factorization.

1011398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1011398 is about 1005.6828525932. The cubic root of 1011398 is about 100.3784989116.

Adding to 1011398 its reverse (8931101), we get a palindrome (9942499).

The spelling of 1011398 in words is "one million, eleven thousand, three hundred ninety-eight".