70370389 has 2 divisors, whose sum is σ = 70370390. Its totient is φ = 70370388.

The previous prime is 70370387. The next prime is 70370407. The reversal of 70370389 is 98307307.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55800900 + 14569489 = 7470^2 + 3817^2 .

It is a cyclic number.

It is not a de Polignac number, because 70370389 - 2¹ = 70370387 is a prime.

It is a super-2 number, since 2×70370389² = 9903983296022642, which contains 22 as substring.

Together with 70370387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70370387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35185194 + 35185195.

It is an arithmetic number, because the mean of its divisors is an integer number (35185195).

Almost surely, 2^70370389 is an apocalyptic number.

It is an amenable number.

70370389 is a deficient number, since it is larger than the sum of its proper divisors (1).

70370389 is an equidigital number, since it uses as much as digits as its factorization.

70370389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 70370389 is about 8388.7060384782. The cubic root of 70370389 is about 412.8541463093.

The spelling of 70370389 in words is "seventy million, three hundred seventy thousand, three hundred eighty-nine".