1899241 has 4 divisors (see below), whose sum is σ = 1925332. Its totient is φ = 1873152.

The previous prime is 1899199. The next prime is 1899253. The reversal of 1899241 is 1429981.

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 1265625 + 633616 = 1125^2 + 796^2 .

It is a cyclic number.

It is not a de Polignac number, because 1899241 - 2¹³ = 1891049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1899197 and 1899206.

It is not an unprimeable number, because it can be changed into a prime (1899281) 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, 12936 + ... + 13081.

It is an arithmetic number, because the mean of its divisors is an integer number (481333).

2^1899241 is an apocalyptic number.

It is an amenable number.

1899241 is a deficient number, since it is larger than the sum of its proper divisors (26091).

1899241 is an equidigital number, since it uses as much as digits as its factorization.

1899241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26090.

The product of its digits is 5184, while the sum is 34.

The square root of 1899241 is about 1378.1295294710. The cubic root of 1899241 is about 123.8397383312.

The spelling of 1899241 in words is "one million, eight hundred ninety-nine thousand, two hundred forty-one".