69990029 has 2 divisors, whose sum is σ = 69990030. Its totient is φ = 69990028.

The previous prime is 69989923. The next prime is 69990031. The reversal of 69990029 is 92009996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48580900 + 21409129 = 6970^2 + 4627^2 .

It is a cyclic number.

It is not a de Polignac number, because 69990029 - 2²⁴ = 53212813 is a prime.

Together with 69990031, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69990049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34995014 + 34995015.

It is an arithmetic number, because the mean of its divisors is an integer number (34995015).

Almost surely, 2^69990029 is an apocalyptic number.

It is an amenable number.

69990029 is a deficient number, since it is larger than the sum of its proper divisors (1).

69990029 is an equidigital number, since it uses as much as digits as its factorization.

69990029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 69990029 is about 8366.0043628963. The cubic root of 69990029 is about 412.1089607966.

The spelling of 69990029 in words is "sixty-nine million, nine hundred ninety thousand, twenty-nine".