79287641 has 2 divisors, whose sum is σ = 79287642. Its totient is φ = 79287640.

The previous prime is 79287623. The next prime is 79287661. The reversal of 79287641 is 14678297.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75620416 + 3667225 = 8696^2 + 1915^2 .

It is a cyclic number.

It is not a de Polignac number, because 79287641 - 2⁶ = 79287577 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 79287592 and 79287601.

It is not a weakly prime, because it can be changed into another prime (79287661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39643820 + 39643821.

It is an arithmetic number, because the mean of its divisors is an integer number (39643821).

Almost surely, 2^79287641 is an apocalyptic number.

It is an amenable number.

79287641 is a deficient number, since it is larger than the sum of its proper divisors (1).

79287641 is an equidigital number, since it uses as much as digits as its factorization.

79287641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 44.

The square root of 79287641 is about 8904.3607855926. The cubic root of 79287641 is about 429.6041805549.

The spelling of 79287641 in words is "seventy-nine million, two hundred eighty-seven thousand, six hundred forty-one".