949953409 has 2 divisors, whose sum is σ = 949953410. Its totient is φ = 949953408.

The previous prime is 949953359. The next prime is 949953419. The reversal of 949953409 is 904359949.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 943718400 + 6235009 = 30720^2 + 2497^2 .

It is a cyclic number.

It is not a de Polignac number, because 949953409 - 2¹⁷ = 949822337 is a prime.

It is a super-2 number, since 2×949953409² = 1804822958541442562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (949953419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474976704 + 474976705.

It is an arithmetic number, because the mean of its divisors is an integer number (474976705).

Almost surely, 2^949953409 is an apocalyptic number.

It is an amenable number.

949953409 is a deficient number, since it is larger than the sum of its proper divisors (1).

949953409 is an equidigital number, since it uses as much as digits as its factorization.

949953409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1574640, while the sum is 52.

The square root of 949953409 is about 30821.3141997547. The cubic root of 949953409 is about 983.0315016431.

The spelling of 949953409 in words is "nine hundred forty-nine million, nine hundred fifty-three thousand, four hundred nine".