769250981 has 2 divisors, whose sum is σ = 769250982. Its totient is φ = 769250980.

The previous prime is 769250947. The next prime is 769250987. The reversal of 769250981 is 189052967.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 481100356 + 288150625 = 21934^2 + 16975^2 .

It is a cyclic number.

It is not a de Polignac number, because 769250981 - 2¹⁴ = 769234597 is a prime.

It is a super-2 number, since 2×769250981² = 1183494143538924722, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (769250987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384625490 + 384625491.

It is an arithmetic number, because the mean of its divisors is an integer number (384625491).

Almost surely, 2^769250981 is an apocalyptic number.

It is an amenable number.

769250981 is a deficient number, since it is larger than the sum of its proper divisors (1).

769250981 is an equidigital number, since it uses as much as digits as its factorization.

769250981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 769250981 is about 27735.3741817196. The cubic root of 769250981 is about 916.2683520089.

The spelling of 769250981 in words is "seven hundred sixty-nine million, two hundred fifty thousand, nine hundred eighty-one".