80820393 has 8 divisors (see below), whose sum is σ = 107917056. Its totient is φ = 53802000.

The previous prime is 80820391. The next prime is 80820407. The reversal of 80820393 is 39302808.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80820393 - 2¹ = 80820391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80820391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17113 + ... + 21318.

It is an arithmetic number, because the mean of its divisors is an integer number (13489632).

Almost surely, 2^80820393 is an apocalyptic number.

It is an amenable number.

80820393 is a deficient number, since it is larger than the sum of its proper divisors (27096663).

80820393 is a wasteful number, since it uses less digits than its factorization.

80820393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39135.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 80820393 is about 8990.0162958695. The cubic root of 80820393 is about 432.3548342824.

The spelling of 80820393 in words is "eighty million, eight hundred twenty thousand, three hundred ninety-three".