69440321 has 2 divisors, whose sum is σ = 69440322. Its totient is φ = 69440320.

The previous prime is 69440317. The next prime is 69440351. The reversal of 69440321 is 12304496.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66994225 + 2446096 = 8185^2 + 1564^2 .

It is a cyclic number.

It is not a de Polignac number, because 69440321 - 2² = 69440317 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (69440351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34720160 + 34720161.

It is an arithmetic number, because the mean of its divisors is an integer number (34720161).

Almost surely, 2^69440321 is an apocalyptic number.

It is an amenable number.

69440321 is a deficient number, since it is larger than the sum of its proper divisors (1).

69440321 is an equidigital number, since it uses as much as digits as its factorization.

69440321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 69440321 is about 8333.0859229940. The cubic root of 69440321 is about 411.0272101299.

The spelling of 69440321 in words is "sixty-nine million, four hundred forty thousand, three hundred twenty-one".