1404428023 has 4 divisors (see below), whose sum is σ = 1404507208. Its totient is φ = 1404348840.

The previous prime is 1404428017. The next prime is 1404428029. The reversal of 1404428023 is 3208244041.

It is a happy number.

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.

It is an interprime number because it is at equal distance from previous prime (1404428017) and next prime (1404428029).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1404428023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1404427982 and 1404428000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404428029) 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, 640 + ... + 53002.

It is an arithmetic number, because the mean of its divisors is an integer number (351126802).

Almost surely, 2^1404428023 is an apocalyptic number.

1404428023 is a deficient number, since it is larger than the sum of its proper divisors (79185).

1404428023 is an equidigital number, since it uses as much as digits as its factorization.

1404428023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79184.

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 1404428023 is about 37475.6990995498. The cubic root of 1404428023 is about 1119.8671247020.

The spelling of 1404428023 in words is "one billion, four hundred four million, four hundred twenty-eight thousand, twenty-three".