70147979 has 8 divisors (see below), whose sum is σ = 76770288. Its totient is φ = 63566560.

The previous prime is 70147969. The next prime is 70147993. The reversal of 70147979 is 97974107.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70147979 - 2¹² = 70143883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70147939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6572 + ... + 13545.

It is an arithmetic number, because the mean of its divisors is an integer number (9596286).

Almost surely, 2^70147979 is an apocalyptic number.

70147979 is a deficient number, since it is larger than the sum of its proper divisors (6622309).

70147979 is a wasteful number, since it uses less digits than its factorization.

70147979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20445.

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

The square root of 70147979 is about 8375.4390332686. The cubic root of 70147979 is about 412.4187368540.

The spelling of 70147979 in words is "seventy million, one hundred forty-seven thousand, nine hundred seventy-nine".