70139227 has 2 divisors, whose sum is σ = 70139228. Its totient is φ = 70139226.

The previous prime is 70139221. The next prime is 70139239. The reversal of 70139227 is 72293107.

It is a weak prime.

It is an emirp because it is prime and its reverse (72293107) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70139227 - 2⁷ = 70139099 is a prime.

It is a super-2 number, since 2×70139227² = 9839022328315058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70139221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35069613 + 35069614.

It is an arithmetic number, because the mean of its divisors is an integer number (35069614).

Almost surely, 2^70139227 is an apocalyptic number.

70139227 is a deficient number, since it is larger than the sum of its proper divisors (1).

70139227 is an equidigital number, since it uses as much as digits as its factorization.

70139227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 70139227 is about 8374.9165368975. The cubic root of 70139227 is about 412.4015843575.

The spelling of 70139227 in words is "seventy million, one hundred thirty-nine thousand, two hundred twenty-seven".