69239969 has 2 divisors, whose sum is σ = 69239970. Its totient is φ = 69239968.

The previous prime is 69239927. The next prime is 69240007. The reversal of 69239969 is 96993296.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57577744 + 11662225 = 7588^2 + 3415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69239969 is a prime.

It is a super-2 number, since 2×69239969² = 9588346614241922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 69239969.

It is not a weakly prime, because it can be changed into another prime (69239909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34619984 + 34619985.

It is an arithmetic number, because the mean of its divisors is an integer number (34619985).

Almost surely, 2^69239969 is an apocalyptic number.

It is an amenable number.

69239969 is a deficient number, since it is larger than the sum of its proper divisors (1).

69239969 is an equidigital number, since it uses as much as digits as its factorization.

69239969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1417176, while the sum is 53.

The square root of 69239969 is about 8321.0557623417. The cubic root of 69239969 is about 410.6315252715.

The spelling of 69239969 in words is "sixty-nine million, two hundred thirty-nine thousand, nine hundred sixty-nine".