408238078 has 4 divisors (see below), whose sum is σ = 612357120. Its totient is φ = 204119038.

The previous prime is 408238069. The next prime is 408238081. The reversal of 408238078 is 870832804.

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

It is a self number, because there is not a number n which added to its sum of digits gives 408238078.

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, 102059518 + ... + 102059521.

It is an arithmetic number, because the mean of its divisors is an integer number (153089280).

Almost surely, 2^408238078 is an apocalyptic number.

408238078 is a deficient number, since it is larger than the sum of its proper divisors (204119042).

408238078 is a wasteful number, since it uses less digits than its factorization.

408238078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204119041.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 408238078 is about 20204.9023259208. The cubic root of 408238078 is about 741.8301897794.

The spelling of 408238078 in words is "four hundred eight million, two hundred thirty-eight thousand, seventy-eight".