69213149 has 2 divisors, whose sum is σ = 69213150. Its totient is φ = 69213148.

The previous prime is 69213127. The next prime is 69213161. The reversal of 69213149 is 94131296.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69189124 + 24025 = 8318^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 69213149 - 2¹² = 69209053 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69213449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34606574 + 34606575.

It is an arithmetic number, because the mean of its divisors is an integer number (34606575).

Almost surely, 2^69213149 is an apocalyptic number.

It is an amenable number.

69213149 is a deficient number, since it is larger than the sum of its proper divisors (1).

69213149 is an equidigital number, since it uses as much as digits as its factorization.

69213149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 35.

The square root of 69213149 is about 8319.4440319050. Note that the first 3 decimals coincide. The cubic root of 69213149 is about 410.5784992522.

The spelling of 69213149 in words is "sixty-nine million, two hundred thirteen thousand, one hundred forty-nine".