69309949 has 2 divisors, whose sum is σ = 69309950. Its totient is φ = 69309948.

The previous prime is 69309943. The next prime is 69309953. The reversal of 69309949 is 94990396.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36990724 + 32319225 = 6082^2 + 5685^2 .

It is a cyclic number.

It is not a de Polignac number, because 69309949 - 2³ = 69309941 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 (69309941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34654974 + 34654975.

It is an arithmetic number, because the mean of its divisors is an integer number (34654975).

Almost surely, 2^69309949 is an apocalyptic number.

It is an amenable number.

69309949 is a deficient number, since it is larger than the sum of its proper divisors (1).

69309949 is an equidigital number, since it uses as much as digits as its factorization.

69309949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472392, while the sum is 49.

The square root of 69309949 is about 8325.2596956491. The cubic root of 69309949 is about 410.7698187983.

The spelling of 69309949 in words is "sixty-nine million, three hundred nine thousand, nine hundred forty-nine".