69880949 has 2 divisors, whose sum is σ = 69880950. Its totient is φ = 69880948.

The previous prime is 69880919. The next prime is 69880961. The reversal of 69880949 is 94908896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36990724 + 32890225 = 6082^2 + 5735^2 .

It is a cyclic number.

It is not a de Polignac number, because 69880949 - 2¹² = 69876853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 69880949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69880919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34940474 + 34940475.

It is an arithmetic number, because the mean of its divisors is an integer number (34940475).

Almost surely, 2^69880949 is an apocalyptic number.

It is an amenable number.

69880949 is a deficient number, since it is larger than the sum of its proper divisors (1).

69880949 is an equidigital number, since it uses as much as digits as its factorization.

69880949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The square root of 69880949 is about 8359.4825796816. The cubic root of 69880949 is about 411.8947578144.

The spelling of 69880949 in words is "sixty-nine million, eight hundred eighty thousand, nine hundred forty-nine".