70417979 has 2 divisors, whose sum is σ = 70417980. Its totient is φ = 70417978.

The previous prime is 70417969. The next prime is 70418011. The reversal of 70417979 is 97971407.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (97971407) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70417979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70417909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35208989 + 35208990.

It is an arithmetic number, because the mean of its divisors is an integer number (35208990).

Almost surely, 2^70417979 is an apocalyptic number.

70417979 is a deficient number, since it is larger than the sum of its proper divisors (1).

70417979 is an equidigital number, since it uses as much as digits as its factorization.

70417979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 111132, while the sum is 44.

The square root of 70417979 is about 8391.5421109591. The cubic root of 70417979 is about 412.9471935017.

The spelling of 70417979 in words is "seventy million, four hundred seventeen thousand, nine hundred seventy-nine".