797893009 has 9 divisors (see below), whose sum is σ = 816589371. Its totient is φ = 779617200.

The previous prime is 797893007. The next prime is 797893051. The reversal of 797893009 is 900398797.

The square root of 797893009 is 28247.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 670654609 + 127238400 = 25897^2 + 11280^2 .

It is not a de Polignac number, because 797893009 - 2¹ = 797893007 is a prime.

It is a super-2 number, since 2×797893009² = 1273266507622148162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (797893007) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1327309 + ... + 1327909.

Almost surely, 2^797893009 is an apocalyptic number.

797893009 is the 28247-th square number.

797893009 is the 14124-th centered octagonal number.

It is an amenable number.

797893009 is a deficient number, since it is larger than the sum of its proper divisors (18696362).

797893009 is an frugal number, since it uses more digits than its factorization.

797893009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 52.

The cubic root of 797893009 is about 927.5020680323.

The spelling of 797893009 in words is "seven hundred ninety-seven million, eight hundred ninety-three thousand, nine".