947499769 has 2 divisors, whose sum is σ = 947499770. Its totient is φ = 947499768.

The previous prime is 947499767. The next prime is 947499823. The reversal of 947499769 is 967994749.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 924889744 + 22610025 = 30412^2 + 4755^2 .

It is a cyclic number.

It is not a de Polignac number, because 947499769 - 2¹ = 947499767 is a prime.

It is a super-2 number, since 2×947499769² = 1795511624510106722, which contains 22 as substring.

Together with 947499767, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 947499769.

It is not a weakly prime, because it can be changed into another prime (947499767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473749884 + 473749885.

It is an arithmetic number, because the mean of its divisors is an integer number (473749885).

Almost surely, 2^947499769 is an apocalyptic number.

It is an amenable number.

947499769 is a deficient number, since it is larger than the sum of its proper divisors (1).

947499769 is an equidigital number, since it uses as much as digits as its factorization.

947499769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30862944, while the sum is 64.

The square root of 947499769 is about 30781.4841909873. The cubic root of 947499769 is about 982.1844127098.

The spelling of 947499769 in words is "nine hundred forty-seven million, four hundred ninety-nine thousand, seven hundred sixty-nine".