1940797 has 2 divisors, whose sum is σ = 1940798. Its totient is φ = 1940796.

The previous prime is 1940779. The next prime is 1940821. The reversal of 1940797 is 7970491.

Together with previous prime (1940779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1413721 + 527076 = 1189^2 + 726^2 .

It is an emirp because it is prime and its reverse (7970491) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1940797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1940747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970398 + 970399.

It is an arithmetic number, because the mean of its divisors is an integer number (970399).

2^1940797 is an apocalyptic number.

It is an amenable number.

1940797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940797 is an equidigital number, since it uses as much as digits as its factorization.

1940797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 1940797 is about 1393.1249046658. The cubic root of 1940797 is about 124.7364473773.

The spelling of 1940797 in words is "one million, nine hundred forty thousand, seven hundred ninety-seven".