408918854 has 4 divisors (see below), whose sum is σ = 613378284. Its totient is φ = 204459426.

The previous prime is 408918823. The next prime is 408918883. The reversal of 408918854 is 458819804.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 408918799 and 408918808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102229712 + ... + 102229715.

It is an arithmetic number, because the mean of its divisors is an integer number (153344571).

Almost surely, 2^408918854 is an apocalyptic number.

408918854 is a deficient number, since it is larger than the sum of its proper divisors (204459430).

408918854 is a wasteful number, since it uses less digits than its factorization.

408918854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204459429.

The product of its (nonzero) digits is 368640, while the sum is 47.

The square root of 408918854 is about 20221.7421109063. The cubic root of 408918854 is about 742.2423183494.

The spelling of 408918854 in words is "four hundred eight million, nine hundred eighteen thousand, eight hundred fifty-four".