408021093 has 24 divisors (see below), whose sum is σ = 595026432. Its totient is φ = 269415648.

The previous prime is 408021079. The next prime is 408021121. The reversal of 408021093 is 390120804.

It is not a de Polignac number, because 408021093 - 2¹² = 408016997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408021073) 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 23 ways as a sum of consecutive naturals, for example, 527455 + ... + 528227.

It is an arithmetic number, because the mean of its divisors is an integer number (24792768).

Almost surely, 2^408021093 is an apocalyptic number.

It is an amenable number.

408021093 is a deficient number, since it is larger than the sum of its proper divisors (187005339).

408021093 is a wasteful number, since it uses less digits than its factorization.

408021093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 408021093 is about 20199.5319995291. The cubic root of 408021093 is about 741.6987349907.

Adding to 408021093 its reverse (390120804), we get a palindrome (798141897).

The spelling of 408021093 in words is "four hundred eight million, twenty-one thousand, ninety-three".