406668949 has 8 divisors (see below), whose sum is σ = 409386560. Its totient is φ = 403958016.

The previous prime is 406668923. The next prime is 406668953. The reversal of 406668949 is 949866604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 406668949 - 2²³ = 398280341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 406668896 and 406668905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406668919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185542 + ... + 187720.

It is an arithmetic number, because the mean of its divisors is an integer number (51173320).

Almost surely, 2^406668949 is an apocalyptic number.

It is an amenable number.

406668949 is a deficient number, since it is larger than the sum of its proper divisors (2717611).

406668949 is a wasteful number, since it uses less digits than its factorization.

406668949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The square root of 406668949 is about 20166.0345383023. The cubic root of 406668949 is about 740.8785213820.

The spelling of 406668949 in words is "four hundred six million, six hundred sixty-eight thousand, nine hundred forty-nine".