408208461 has 4 divisors (see below), whose sum is σ = 544277952. Its totient is φ = 272138972.

The previous prime is 408208453. The next prime is 408208477. The reversal of 408208461 is 164802804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 408208461 - 2³ = 408208453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408208441) 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, 68034741 + ... + 68034746.

It is an arithmetic number, because the mean of its divisors is an integer number (136069488).

Almost surely, 2^408208461 is an apocalyptic number.

It is an amenable number.

408208461 is a deficient number, since it is larger than the sum of its proper divisors (136069491).

408208461 is a wasteful number, since it uses less digits than its factorization.

408208461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136069490.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 408208461 is about 20204.1693964389. The cubic root of 408208461 is about 741.8122498261.

The spelling of 408208461 in words is "four hundred eight million, two hundred eight thousand, four hundred sixty-one".