70923389 has 2 divisors, whose sum is σ = 70923390. Its totient is φ = 70923388.

The previous prime is 70923379. The next prime is 70923451. The reversal of 70923389 is 98332907.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68724100 + 2199289 = 8290^2 + 1483^2 .

It is an emirp because it is prime and its reverse (98332907) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70923389 - 2⁴ = 70923373 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70923379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35461694 + 35461695.

It is an arithmetic number, because the mean of its divisors is an integer number (35461695).

Almost surely, 2^70923389 is an apocalyptic number.

It is an amenable number.

70923389 is a deficient number, since it is larger than the sum of its proper divisors (1).

70923389 is an equidigital number, since it uses as much as digits as its factorization.

70923389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 70923389 is about 8421.6025197108. The cubic root of 70923389 is about 413.9327860419.

The spelling of 70923389 in words is "seventy million, nine hundred twenty-three thousand, three hundred eighty-nine".