1400813 has 4 divisors (see below), whose sum is σ = 1474560. Its totient is φ = 1327068.

The previous prime is 1400809. The next prime is 1400821. The reversal of 1400813 is 3180041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3180041 = 59 ⋅53899.

It is a cyclic number.

It is not a de Polignac number, because 1400813 - 2² = 1400809 is a prime.

It is a Duffinian number.

1400813 is a modest number, since divided by 813 gives 14 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1400791 and 1400800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400803) 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, 36845 + ... + 36882.

It is an arithmetic number, because the mean of its divisors is an integer number (368640).

2^1400813 is an apocalyptic number.

It is an amenable number.

1400813 is a deficient number, since it is larger than the sum of its proper divisors (73747).

1400813 is an equidigital number, since it uses as much as digits as its factorization.

1400813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73746.

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

The square root of 1400813 is about 1183.5594619621. The cubic root of 1400813 is about 111.8905446394.

Adding to 1400813 its reverse (3180041), we get a palindrome (4580854).

The spelling of 1400813 in words is "one million, four hundred thousand, eight hundred thirteen".