947049731 has 2 divisors, whose sum is σ = 947049732. Its totient is φ = 947049730.

The previous prime is 947049713. The next prime is 947049749. The reversal of 947049731 is 137940749.

It is a happy number.

Together with previous prime (947049713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (947049713) and next prime (947049749).

It is an emirp because it is prime and its reverse (137940749) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 947049731 - 2⁶ = 947049667 is a prime.

It is a super-2 number, since 2×947049731² = 1793806385974344722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (947049031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473524865 + 473524866.

It is an arithmetic number, because the mean of its divisors is an integer number (473524866).

Almost surely, 2^947049731 is an apocalyptic number.

947049731 is a deficient number, since it is larger than the sum of its proper divisors (1).

947049731 is an equidigital number, since it uses as much as digits as its factorization.

947049731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 947049731 is about 30774.1731164300. The cubic root of 947049731 is about 982.0288839789.

The spelling of 947049731 in words is "nine hundred forty-seven million, forty-nine thousand, seven hundred thirty-one".