409651949 has 8 divisors (see below), whose sum is σ = 483276288. Its totient is φ = 339803280.

The previous prime is 409651943. The next prime is 409651967. The reversal of 409651949 is 949156904.

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 409651949 - 2¹² = 409647853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409651943) 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, 943682 + ... + 944115.

It is an arithmetic number, because the mean of its divisors is an integer number (60409536).

Almost surely, 2^409651949 is an apocalyptic number.

It is an amenable number.

409651949 is a deficient number, since it is larger than the sum of its proper divisors (73624339).

409651949 is a wasteful number, since it uses less digits than its factorization.

409651949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887835.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 409651949 is about 20239.8603997162. The cubic root of 409651949 is about 742.6856086522.

The spelling of 409651949 in words is "four hundred nine million, six hundred fifty-one thousand, nine hundred forty-nine".