69004421 has 2 divisors, whose sum is σ = 69004422. Its totient is φ = 69004420.

The previous prime is 69004417. The next prime is 69004477. The reversal of 69004421 is 12440096.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66601921 + 2402500 = 8161^2 + 1550^2 .

It is a cyclic number.

It is not a de Polignac number, because 69004421 - 2² = 69004417 is a prime.

It is a super-2 number, since 2×69004421² = 9523220235090482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69004721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34502210 + 34502211.

It is an arithmetic number, because the mean of its divisors is an integer number (34502211).

Almost surely, 2^69004421 is an apocalyptic number.

It is an amenable number.

69004421 is a deficient number, since it is larger than the sum of its proper divisors (1).

69004421 is an equidigital number, since it uses as much as digits as its factorization.

69004421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 69004421 is about 8306.8899715838. The cubic root of 69004421 is about 410.1653526976.

The spelling of 69004421 in words is "sixty-nine million, four thousand, four hundred twenty-one".