1392403 has 4 divisors (see below), whose sum is σ = 1399600. Its totient is φ = 1385208.

The previous prime is 1392379. The next prime is 1392407. The reversal of 1392403 is 3042931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3042931 = 349 ⋅8719.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1392403 is a prime.

It is a super-2 number, since 2×1392403² = 3877572228818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1392407) 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, 3300 + ... + 3697.

It is an arithmetic number, because the mean of its divisors is an integer number (349900).

2^1392403 is an apocalyptic number.

1392403 is a deficient number, since it is larger than the sum of its proper divisors (7197).

1392403 is an equidigital number, since it uses as much as digits as its factorization.

1392403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7196.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1392403 is about 1180.0012711858. The cubic root of 1392403 is about 111.6661775677. Note that the first 3 decimals are identical.

It can be divided in two parts, 13 and 92403, that added together give a square (92416 = 304²).

The spelling of 1392403 in words is "one million, three hundred ninety-two thousand, four hundred three".