1904117 has 2 divisors, whose sum is σ = 1904118. Its totient is φ = 1904116.

The previous prime is 1904099. The next prime is 1904129. The reversal of 1904117 is 7114091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1196836 + 707281 = 1094^2 + 841^2 .

It is an emirp because it is prime and its reverse (7114091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1904117 - 2⁸ = 1903861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1904092 and 1904101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1904167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 952058 + 952059.

It is an arithmetic number, because the mean of its divisors is an integer number (952059).

2^1904117 is an apocalyptic number.

It is an amenable number.

1904117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1904117 is an equidigital number, since it uses as much as digits as its factorization.

1904117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 1904117 is about 1379.8974599585. The cubic root of 1904117 is about 123.9456273931.

The spelling of 1904117 in words is "one million, nine hundred four thousand, one hundred seventeen".