1396403 has 4 divisors (see below), whose sum is σ = 1399248. Its totient is φ = 1393560.

The previous prime is 1396393. The next prime is 1396411. The reversal of 1396403 is 3046931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3046931 = 797 ⋅3823.

It is a cyclic number.

It is not a de Polignac number, because 1396403 - 2⁴ = 1396387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1396433) 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, 476 + ... + 1737.

It is an arithmetic number, because the mean of its divisors is an integer number (349812).

2^1396403 is an apocalyptic number.

1396403 is a deficient number, since it is larger than the sum of its proper divisors (2845).

1396403 is an equidigital number, since it uses as much as digits as its factorization.

1396403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2844.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1396403 is about 1181.6949691016. The cubic root of 1396403 is about 111.7730043211.

The spelling of 1396403 in words is "one million, three hundred ninety-six thousand, four hundred three".