803509397 has 2 divisors, whose sum is σ = 803509398. Its totient is φ = 803509396.

The previous prime is 803509391. The next prime is 803509417. The reversal of 803509397 is 793905308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515562436 + 287946961 = 22706^2 + 16969^2 .

It is a cyclic number.

It is not a de Polignac number, because 803509397 - 2⁴ = 803509381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (803509391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401754698 + 401754699.

It is an arithmetic number, because the mean of its divisors is an integer number (401754699).

Almost surely, 2^803509397 is an apocalyptic number.

It is an amenable number.

803509397 is a deficient number, since it is larger than the sum of its proper divisors (1).

803509397 is an equidigital number, since it uses as much as digits as its factorization.

803509397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 803509397 is about 28346.2413204996. The cubic root of 803509397 is about 929.6732181373.

The spelling of 803509397 in words is "eight hundred three million, five hundred nine thousand, three hundred ninety-seven".