79383391 has 2 divisors, whose sum is σ = 79383392. Its totient is φ = 79383390.

The previous prime is 79383371. The next prime is 79383431. The reversal of 79383391 is 19338397.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79383391 - 2¹¹ = 79381343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79383301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39691695 + 39691696.

It is an arithmetic number, because the mean of its divisors is an integer number (39691696).

Almost surely, 2^79383391 is an apocalyptic number.

79383391 is a deficient number, since it is larger than the sum of its proper divisors (1).

79383391 is an equidigital number, since it uses as much as digits as its factorization.

79383391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 43.

The square root of 79383391 is about 8909.7357424337. The cubic root of 79383391 is about 429.7770450452. Note that the first 3 decimals are identical.

The spelling of 79383391 in words is "seventy-nine million, three hundred eighty-three thousand, three hundred ninety-one".