70000279 has 4 divisors (see below), whose sum is σ = 70099720. Its totient is φ = 69900840.

The previous prime is 70000267. The next prime is 70000283. The reversal of 70000279 is 97200007.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70000279 - 2²¹ = 67903127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70000379) 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 in 3 ways as a sum of consecutive naturals, for example, 48657 + ... + 50074.

It is an arithmetic number, because the mean of its divisors is an integer number (17524930).

Almost surely, 2^70000279 is an apocalyptic number.

70000279 is a deficient number, since it is larger than the sum of its proper divisors (99441).

70000279 is an equidigital number, since it uses as much as digits as its factorization.

70000279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99440.

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 70000279 is about 8366.6169387632. The cubic root of 70000279 is about 412.1290775223.

The spelling of 70000279 in words is "seventy million, two hundred seventy-nine", and thus it is an aban number.