79861433 has 2 divisors, whose sum is σ = 79861434. Its totient is φ = 79861432.

The previous prime is 79861417. The next prime is 79861459. The reversal of 79861433 is 33416897.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75568249 + 4293184 = 8693^2 + 2072^2 .

It is a cyclic number.

It is not a de Polignac number, because 79861433 - 2⁴ = 79861417 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79861403) 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 as a sum of consecutive naturals, namely, 39930716 + 39930717.

It is an arithmetic number, because the mean of its divisors is an integer number (39930717).

Almost surely, 2^79861433 is an apocalyptic number.

It is an amenable number.

79861433 is a deficient number, since it is larger than the sum of its proper divisors (1).

79861433 is an equidigital number, since it uses as much as digits as its factorization.

79861433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 79861433 is about 8936.5224220611. The cubic root of 79861433 is about 430.6380162732.

The spelling of 79861433 in words is "seventy-nine million, eight hundred sixty-one thousand, four hundred thirty-three".