793806989 has 4 divisors (see below), whose sum is σ = 793961820. Its totient is φ = 793652160.

The previous prime is 793806983. The next prime is 793807019. The reversal of 793806989 is 989608397.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 989608397 = 443 ⋅2233879.

It can be written as a sum of positive squares in 2 ways, for example, as 346146025 + 447660964 = 18605^2 + 21158^2 .

It is a cyclic number.

It is not a de Polignac number, because 793806989 - 2⁴ = 793806973 is a prime.

It is a super-2 number, since 2×793806989² = 1260259071570492242, 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 (793806983) 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 3 ways as a sum of consecutive naturals, for example, 69452 + ... + 80069.

It is an arithmetic number, because the mean of its divisors is an integer number (198490455).

Almost surely, 2^793806989 is an apocalyptic number.

It is an amenable number.

793806989 is a deficient number, since it is larger than the sum of its proper divisors (154831).

793806989 is a wasteful number, since it uses less digits than its factorization.

793806989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154830.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The square root of 793806989 is about 28174.5805470108. The cubic root of 793806989 is about 925.9161078364.

The spelling of 793806989 in words is "seven hundred ninety-three million, eight hundred six thousand, nine hundred eighty-nine".