1790397 has 16 divisors (see below), whose sum is σ = 3031680. Its totient is φ = 1022976.

The previous prime is 1790363. The next prime is 1790401. The reversal of 1790397 is 7930971.

It is not a de Polignac number, because 1790397 - 2¹⁰ = 1789373 is a prime.

1790397 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1790357) 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 in 15 ways as a sum of consecutive naturals, for example, 4548 + ... + 4925.

It is an arithmetic number, because the mean of its divisors is an integer number (189480).

2^1790397 is an apocalyptic number.

It is an amenable number.

1790397 is a deficient number, since it is larger than the sum of its proper divisors (1241283).

1790397 is an equidigital number, since it uses as much as digits as its factorization.

1790397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9489 (or 9483 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 36.

The square root of 1790397 is about 1338.0571736664. The cubic root of 1790397 is about 121.4273304207.

It can be divided in two parts, 1790 and 397, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1790397 in words is "one million, seven hundred ninety thousand, three hundred ninety-seven".