70958989 has 2 divisors, whose sum is σ = 70958990. Its totient is φ = 70958988.

The previous prime is 70958981. The next prime is 70959019. The reversal of 70958989 is 98985907.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56746089 + 14212900 = 7533^2 + 3770^2 .

It is an emirp because it is prime and its reverse (98985907) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70958989 - 2³ = 70958981 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70958981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35479494 + 35479495.

It is an arithmetic number, because the mean of its divisors is an integer number (35479495).

Almost surely, 2^70958989 is an apocalyptic number.

It is an amenable number.

70958989 is a deficient number, since it is larger than the sum of its proper divisors (1).

70958989 is an equidigital number, since it uses as much as digits as its factorization.

70958989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 55.

The square root of 70958989 is about 8423.7158665283. The cubic root of 70958989 is about 414.0020323206.

It can be divided in two parts, 7095898 and 9, that added together give a palindrome (7095907).

The spelling of 70958989 in words is "seventy million, nine hundred fifty-eight thousand, nine hundred eighty-nine".