949209997 has 2 divisors, whose sum is σ = 949209998. Its totient is φ = 949209996.

The previous prime is 949209973. The next prime is 949210033. The reversal of 949209997 is 799902949.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 633579241 + 315630756 = 25171^2 + 17766^2 .

It is a cyclic number.

It is not a de Polignac number, because 949209997 - 2¹⁹ = 948685709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (949209967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474604998 + 474604999.

It is an arithmetic number, because the mean of its divisors is an integer number (474604999).

Almost surely, 2^949209997 is an apocalyptic number.

It is an amenable number.

949209997 is a deficient number, since it is larger than the sum of its proper divisors (1).

949209997 is an equidigital number, since it uses as much as digits as its factorization.

949209997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3306744, while the sum is 58.

The square root of 949209997 is about 30809.2518085071. The cubic root of 949209997 is about 982.7750019994.

The spelling of 949209997 in words is "nine hundred forty-nine million, two hundred nine thousand, nine hundred ninety-seven".