1400831 has 4 divisors (see below), whose sum is σ = 1406664. Its totient is φ = 1395000.

The previous prime is 1400821. The next prime is 1400863. The reversal of 1400831 is 1380041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1400831 is a prime.

It is a super-2 number, since 2×1400831² = 3924654981122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 4 and base 16.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2540 + ... + 3041.

It is an arithmetic number, because the mean of its divisors is an integer number (351666).

2^1400831 is an apocalyptic number.

1400831 is a deficient number, since it is larger than the sum of its proper divisors (5833).

1400831 is an equidigital number, since it uses as much as digits as its factorization.

1400831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5832.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1400831 is about 1183.5670661184. The cubic root of 1400831 is about 111.8910238900.

Adding to 1400831 its reverse (1380041), we get a palindrome (2780872).

The spelling of 1400831 in words is "one million, four hundred thousand, eight hundred thirty-one".