70209019 has 2 divisors, whose sum is σ = 70209020. Its totient is φ = 70209018.

The previous prime is 70209011. The next prime is 70209037. The reversal of 70209019 is 91090207.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70209019 - 2³ = 70209011 is a prime.

It is a super-2 number, since 2×70209019² = 9858612697884722, which contains 22 as substring.

It is a Chen prime.

It is equal to p_4129615 and since 70209019 and 4129615 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (70209011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35104509 + 35104510.

It is an arithmetic number, because the mean of its divisors is an integer number (35104510).

Almost surely, 2^70209019 is an apocalyptic number.

70209019 is a deficient number, since it is larger than the sum of its proper divisors (1).

70209019 is an equidigital number, since it uses as much as digits as its factorization.

70209019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 70209019 is about 8379.0822289795. The cubic root of 70209019 is about 412.5383256707.

The spelling of 70209019 in words is "seventy million, two hundred nine thousand, nineteen".