408407387 has 4 divisors (see below), whose sum is σ = 408683160. Its totient is φ = 408131616.

The previous prime is 408407357. The next prime is 408407399. The reversal of 408407387 is 783704804.

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

It is a cyclic number.

It is not a de Polignac number, because 408407387 - 2⁶ = 408407323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (408407317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135653 + ... + 138630.

It is an arithmetic number, because the mean of its divisors is an integer number (102170790).

Almost surely, 2^408407387 is an apocalyptic number.

408407387 is a deficient number, since it is larger than the sum of its proper divisors (275773).

408407387 is a wasteful number, since it uses less digits than its factorization.

408407387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275772.

The product of its (nonzero) digits is 150528, while the sum is 41.

The square root of 408407387 is about 20209.0916916125. The cubic root of 408407387 is about 741.9327289390.

The spelling of 408407387 in words is "four hundred eight million, four hundred seven thousand, three hundred eighty-seven".