76209349 has 2 divisors, whose sum is σ = 76209350. Its totient is φ = 76209348.

The previous prime is 76209319. The next prime is 76209383. The reversal of 76209349 is 94390267.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72760900 + 3448449 = 8530^2 + 1857^2 .

It is a cyclic number.

It is not a de Polignac number, because 76209349 - 2⁹ = 76208837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76209319) 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, 38104674 + 38104675.

It is an arithmetic number, because the mean of its divisors is an integer number (38104675).

Almost surely, 2^76209349 is an apocalyptic number.

It is an amenable number.

76209349 is a deficient number, since it is larger than the sum of its proper divisors (1).

76209349 is an equidigital number, since it uses as much as digits as its factorization.

76209349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 76209349 is about 8729.7966184786. The cubic root of 76209349 is about 423.9709340613.

The spelling of 76209349 in words is "seventy-six million, two hundred nine thousand, three hundred forty-nine".