68949479 has 2 divisors, whose sum is σ = 68949480. Its totient is φ = 68949478.

The previous prime is 68949403. The next prime is 68949493. The reversal of 68949479 is 97494986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68949479 - 2¹⁶ = 68883943 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 (68949379) 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, 34474739 + 34474740.

It is an arithmetic number, because the mean of its divisors is an integer number (34474740).

Almost surely, 2^68949479 is an apocalyptic number.

68949479 is a deficient number, since it is larger than the sum of its proper divisors (1).

68949479 is an equidigital number, since it uses as much as digits as its factorization.

68949479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 56.

The square root of 68949479 is about 8303.5822992248. The cubic root of 68949479 is about 410.0564645613.

The spelling of 68949479 in words is "sixty-eight million, nine hundred forty-nine thousand, four hundred seventy-nine".