405397612 has 12 divisors (see below), whose sum is σ = 733909680. Its totient is φ = 195709136.

The previous prime is 405397579. The next prime is 405397621. The reversal of 405397612 is 216793504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1747288 + ... + 1747519.

It is an arithmetic number, because the mean of its divisors is an integer number (61159140).

Almost surely, 2^405397612 is an apocalyptic number.

It is an amenable number.

405397612 is a deficient number, since it is larger than the sum of its proper divisors (328512068).

405397612 is a wasteful number, since it uses less digits than its factorization.

405397612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3494840 (or 3494838 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 405397612 is about 20134.4881236152. The cubic root of 405397612 is about 740.1056654566.

The spelling of 405397612 in words is "four hundred five million, three hundred ninety-seven thousand, six hundred twelve".