1799797 has 2 divisors, whose sum is σ = 1799798. Its totient is φ = 1799796.

The previous prime is 1799783. The next prime is 1799801. The reversal of 1799797 is 7979971.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1745041 + 54756 = 1321^2 + 234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1799797 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1799797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1899797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899898 + 899899.

It is an arithmetic number, because the mean of its divisors is an integer number (899899).

2^1799797 is an apocalyptic number.

It is an amenable number.

1799797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1799797 is an equidigital number, since it uses as much as digits as its factorization.

1799797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 250047, while the sum is 49.

The square root of 1799797 is about 1341.5651307335. The cubic root of 1799797 is about 121.6394668247.

The spelling of 1799797 in words is "one million, seven hundred ninety-nine thousand, seven hundred ninety-seven".