70992109 has 2 divisors, whose sum is σ = 70992110. Its totient is φ = 70992108.

The previous prime is 70992101. The next prime is 70992157. The reversal of 70992109 is 90129907.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55547209 + 15444900 = 7453^2 + 3930^2 .

It is a cyclic number.

It is not a de Polignac number, because 70992109 - 2³ = 70992101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70992101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35496054 + 35496055.

It is an arithmetic number, because the mean of its divisors is an integer number (35496055).

Almost surely, 2^70992109 is an apocalyptic number.

It is an amenable number.

70992109 is a deficient number, since it is larger than the sum of its proper divisors (1).

70992109 is an equidigital number, since it uses as much as digits as its factorization.

70992109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 70992109 is about 8425.6815154621. The cubic root of 70992109 is about 414.0664339078.

The spelling of 70992109 in words is "seventy million, nine hundred ninety-two thousand, one hundred nine".