408949 has 4 divisors (see below), whose sum is σ = 413100. Its totient is φ = 404800.

The previous prime is 408943. The next prime is 408953. The reversal of 408949 is 949804.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 268324 + 140625 = 518^2 + 375^2 .

It is a cyclic number.

It is not a de Polignac number, because 408949 - 2⁹ = 408437 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 (408943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1924 + ... + 2125.

It is an arithmetic number, because the mean of its divisors is an integer number (103275).

2⁴⁰⁸⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

408949 is a deficient number, since it is larger than the sum of its proper divisors (4151).

408949 is a wasteful number, since it uses less digits than its factorization.

408949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4150.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 408949 is about 639.4912040052. The cubic root of 408949 is about 74.2260557573.

The spelling of 408949 in words is "four hundred eight thousand, nine hundred forty-nine".