69072389 has 2 divisors, whose sum is σ = 69072390. Its totient is φ = 69072388.

The previous prime is 69072347. The next prime is 69072449. The reversal of 69072389 is 98327096.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49420900 + 19651489 = 7030^2 + 4433^2 .

It is a cyclic number.

It is not a de Polignac number, because 69072389 - 2¹⁶ = 69006853 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69072589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34536194 + 34536195.

It is an arithmetic number, because the mean of its divisors is an integer number (34536195).

Almost surely, 2^69072389 is an apocalyptic number.

It is an amenable number.

69072389 is a deficient number, since it is larger than the sum of its proper divisors (1).

69072389 is an equidigital number, since it uses as much as digits as its factorization.

69072389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 69072389 is about 8310.9800264469. The cubic root of 69072389 is about 410.2999767800.

The spelling of 69072389 in words is "sixty-nine million, seventy-two thousand, three hundred eighty-nine".