771149047 has 2 divisors, whose sum is σ = 771149048. Its totient is φ = 771149046.

The previous prime is 771149021. The next prime is 771149051. The reversal of 771149047 is 740941177.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 771149047 - 2⁷ = 771148919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (771149017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385574523 + 385574524.

It is an arithmetic number, because the mean of its divisors is an integer number (385574524).

Almost surely, 2^771149047 is an apocalyptic number.

771149047 is a deficient number, since it is larger than the sum of its proper divisors (1).

771149047 is an equidigital number, since it uses as much as digits as its factorization.

771149047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 40.

The square root of 771149047 is about 27769.5705224262. The cubic root of 771149047 is about 917.0213396169.

The spelling of 771149047 in words is "seven hundred seventy-one million, one hundred forty-nine thousand, forty-seven".