1904423 has 8 divisors (see below), whose sum is σ = 2052096. Its totient is φ = 1762200.

The previous prime is 1904407. The next prime is 1904429. The reversal of 1904423 is 3244091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1904423 - 2⁴ = 1904407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1904429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623 + ... + 2048.

It is an arithmetic number, because the mean of its divisors is an integer number (256512).

2^1904423 is an apocalyptic number.

1904423 is a deficient number, since it is larger than the sum of its proper divisors (147673).

1904423 is a wasteful number, since it uses less digits than its factorization.

1904423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1904423 is about 1380.0083333082. The cubic root of 1904423 is about 123.9522665738.

Subtracting from 1904423 its sum of digits (23), we obtain a square (1904400 = 1380²).

The spelling of 1904423 in words is "one million, nine hundred four thousand, four hundred twenty-three".