79789357 has 2 divisors, whose sum is σ = 79789358. Its totient is φ = 79789356.

The previous prime is 79789337. The next prime is 79789363. The reversal of 79789357 is 75398797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56160036 + 23629321 = 7494^2 + 4861^2 .

It is an emirp because it is prime and its reverse (75398797) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79789357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79789298 and 79789307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79789337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39894678 + 39894679.

It is an arithmetic number, because the mean of its divisors is an integer number (39894679).

Almost surely, 2^79789357 is an apocalyptic number.

It is an amenable number.

79789357 is a deficient number, since it is larger than the sum of its proper divisors (1).

79789357 is an equidigital number, since it uses as much as digits as its factorization.

79789357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3333960, while the sum is 55.

The square root of 79789357 is about 8932.4888469004. The cubic root of 79789357 is about 430.5084251102.

The spelling of 79789357 in words is "seventy-nine million, seven hundred eighty-nine thousand, three hundred fifty-seven".