1400085823 has 4 divisors (see below), whose sum is σ = 1400197240. Its totient is φ = 1399974408.

The previous prime is 1400085811. The next prime is 1400085839. The reversal of 1400085823 is 3285800041.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3285800041 = 16693 ⋅196837.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1400085823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400085803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34053 + ... + 62926.

It is an arithmetic number, because the mean of its divisors is an integer number (350049310).

Almost surely, 2^1400085823 is an apocalyptic number.

1400085823 is a deficient number, since it is larger than the sum of its proper divisors (111417).

1400085823 is an equidigital number, since it uses as much as digits as its factorization.

1400085823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111416.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 1400085823 is about 37417.7207082420. The cubic root of 1400085823 is about 1118.7118009574.

Adding to 1400085823 its reverse (3285800041), we get a palindrome (4685885864).

The spelling of 1400085823 in words is "one billion, four hundred million, eighty-five thousand, eight hundred twenty-three".