1904369 has 4 divisors (see below), whose sum is σ = 1917300. Its totient is φ = 1891440.

The previous prime is 1904311. The next prime is 1904407. The reversal of 1904369 is 9634091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 774400 + 1129969 = 880^2 + 1063^2 .

It is a cyclic number.

It is not a de Polignac number, because 1904369 - 2¹² = 1900273 is a prime.

It is a super-2 number, since 2×1904369² = 7253242576322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1904069) 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, 6242 + ... + 6539.

It is an arithmetic number, because the mean of its divisors is an integer number (479325).

2^1904369 is an apocalyptic number.

It is an amenable number.

1904369 is a deficient number, since it is larger than the sum of its proper divisors (12931).

1904369 is a wasteful number, since it uses less digits than its factorization.

1904369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12930.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1904369 is about 1379.9887680702. The cubic root of 1904369 is about 123.9510950053.

The spelling of 1904369 in words is "one million, nine hundred four thousand, three hundred sixty-nine".