408078121 has 8 divisors (see below), whose sum is σ = 464531904. Its totient is φ = 354850320.

The previous prime is 408078119. The next prime is 408078131. The reversal of 408078121 is 121870804.

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

It is not a de Polignac number, because 408078121 - 2¹ = 408078119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (408078131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 806226 + ... + 806731.

It is an arithmetic number, because the mean of its divisors is an integer number (58066488).

Almost surely, 2^408078121 is an apocalyptic number.

It is an amenable number.

408078121 is a deficient number, since it is larger than the sum of its proper divisors (56453783).

408078121 is a wasteful number, since it uses less digits than its factorization.

408078121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612991.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 408078121 is about 20200.9435670713. The cubic root of 408078121 is about 741.7332884535.

The spelling of 408078121 in words is "four hundred eight million, seventy-eight thousand, one hundred twenty-one".