949384781 has 2 divisors, whose sum is σ = 949384782. Its totient is φ = 949384780.

The previous prime is 949384763. The next prime is 949384801. The reversal of 949384781 is 187483949.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 570732100 + 378652681 = 23890^2 + 19459^2 .

It is a cyclic number.

It is not a de Polignac number, because 949384781 - 2²⁶ = 882275917 is a prime.

It is a super-2 number, since 2×949384781² = 1802662924788835922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (949384721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474692390 + 474692391.

It is an arithmetic number, because the mean of its divisors is an integer number (474692391).

Almost surely, 2^949384781 is an apocalyptic number.

It is an amenable number.

949384781 is a deficient number, since it is larger than the sum of its proper divisors (1).

949384781 is an equidigital number, since it uses as much as digits as its factorization.

949384781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 53.

The square root of 949384781 is about 30812.0882284859. The cubic root of 949384781 is about 982.8353198090.

The spelling of 949384781 in words is "nine hundred forty-nine million, three hundred eighty-four thousand, seven hundred eighty-one".