69968449 has 2 divisors, whose sum is σ = 69968450. Its totient is φ = 69968448.

The previous prime is 69968407. The next prime is 69968453. The reversal of 69968449 is 94486996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64112049 + 5856400 = 8007^2 + 2420^2 .

It is a cyclic number.

It is not a de Polignac number, because 69968449 - 2¹⁵ = 69935681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 69968449.

It is not a weakly prime, because it can be changed into another prime (69965449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34984224 + 34984225.

It is an arithmetic number, because the mean of its divisors is an integer number (34984225).

Almost surely, 2^69968449 is an apocalyptic number.

It is an amenable number.

69968449 is a deficient number, since it is larger than the sum of its proper divisors (1).

69968449 is an equidigital number, since it uses as much as digits as its factorization.

69968449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 55.

The square root of 69968449 is about 8364.7145199343. The cubic root of 69968449 is about 412.0666013077.

The spelling of 69968449 in words is "sixty-nine million, nine hundred sixty-eight thousand, four hundred forty-nine".