76902149 has 2 divisors, whose sum is σ = 76902150. Its totient is φ = 76902148.

The previous prime is 76902143. The next prime is 76902173. The reversal of 76902149 is 94120967.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73839649 + 3062500 = 8593^2 + 1750^2 .

It is an emirp because it is prime and its reverse (94120967) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76902149 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 (76902143) 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, 38451074 + 38451075.

It is an arithmetic number, because the mean of its divisors is an integer number (38451075).

Almost surely, 2^76902149 is an apocalyptic number.

It is an amenable number.

76902149 is a deficient number, since it is larger than the sum of its proper divisors (1).

76902149 is an equidigital number, since it uses as much as digits as its factorization.

76902149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 76902149 is about 8769.3870367318. The cubic root of 76902149 is about 425.2517981934.

The spelling of 76902149 in words is "seventy-six million, nine hundred two thousand, one hundred forty-nine".