406766738 has 12 divisors (see below), whose sum is σ = 709766622. Its totient is φ = 174328560.

The previous prime is 406766729. The next prime is 406766741. The reversal of 406766738 is 837667604.

It can be written as a sum of positive squares in only one way, i.e., 386633569 + 20133169 = 19663^2 + 4487^2 .

It is a junction number, because it is equal to n+sod(n) for n = 406766692 and 406766701.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2075243 + ... + 2075438.

Almost surely, 2^406766738 is an apocalyptic number.

406766738 is a deficient number, since it is larger than the sum of its proper divisors (302999884).

406766738 is a wasteful number, since it uses less digits than its factorization.

406766738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150697 (or 4150690 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 47.

The square root of 406766738 is about 20168.4589892237. The cubic root of 406766738 is about 740.9379013466.

The spelling of 406766738 in words is "four hundred six million, seven hundred sixty-six thousand, seven hundred thirty-eight".