797940413 has 4 divisors (see below), whose sum is σ = 798116700. Its totient is φ = 797764128.

The previous prime is 797940391. The next prime is 797940433. The reversal of 797940413 is 314049797.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314049797 = 23 ⋅13654339.

It can be written as a sum of positive squares in 2 ways, for example, as 755260324 + 42680089 = 27482^2 + 6533^2 .

It is a cyclic number.

It is not a de Polignac number, because 797940413 - 2¹² = 797936317 is a prime.

It is a super-2 number, since 2×797940413² = 1273417805397221138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797940433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81170 + ... + 90467.

It is an arithmetic number, because the mean of its divisors is an integer number (199529175).

Almost surely, 2^797940413 is an apocalyptic number.

It is an amenable number.

797940413 is a deficient number, since it is larger than the sum of its proper divisors (176287).

797940413 is a wasteful number, since it uses less digits than its factorization.

797940413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176286.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 797940413 is about 28247.8390854947. The cubic root of 797940413 is about 927.5204357570.

The spelling of 797940413 in words is "seven hundred ninety-seven million, nine hundred forty thousand, four hundred thirteen".