1799897 has 4 divisors (see below), whose sum is σ = 1963536. Its totient is φ = 1636260.

The previous prime is 1799887. The next prime is 1799923. The reversal of 1799897 is 7989971.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1799897 - 2⁴ = 1799881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1799867) 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, 81803 + ... + 81824.

It is an arithmetic number, because the mean of its divisors is an integer number (490884).

2^1799897 is an apocalyptic number.

It is an amenable number.

1799897 is a deficient number, since it is larger than the sum of its proper divisors (163639).

1799897 is a wasteful number, since it uses less digits than its factorization.

1799897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163638.

The product of its digits is 285768, while the sum is 50.

The square root of 1799897 is about 1341.6024001171. The cubic root of 1799897 is about 121.6417196198.

The spelling of 1799897 in words is "one million, seven hundred ninety-nine thousand, eight hundred ninety-seven".