79851479 has 2 divisors, whose sum is σ = 79851480. Its totient is φ = 79851478.

The previous prime is 79851463. The next prime is 79851511. The reversal of 79851479 is 97415897.

It is a weak prime.

It is an emirp because it is prime and its reverse (97415897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79851479 - 2⁴ = 79851463 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79851419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39925739 + 39925740.

It is an arithmetic number, because the mean of its divisors is an integer number (39925740).

Almost surely, 2^79851479 is an apocalyptic number.

79851479 is a deficient number, since it is larger than the sum of its proper divisors (1).

79851479 is an equidigital number, since it uses as much as digits as its factorization.

79851479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 50.

The square root of 79851479 is about 8935.9654766567. The cubic root of 79851479 is about 430.6201238281.

The spelling of 79851479 in words is "seventy-nine million, eight hundred fifty-one thousand, four hundred seventy-nine".