406780922 has 4 divisors (see below), whose sum is σ = 610171386. Its totient is φ = 203390460.

The previous prime is 406780909. The next prime is 406780931. The reversal of 406780922 is 229087604.

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

It can be written as a sum of positive squares in only one way, i.e., 406385281 + 395641 = 20159^2 + 629^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101695229 + ... + 101695232.

Almost surely, 2^406780922 is an apocalyptic number.

406780922 is a deficient number, since it is larger than the sum of its proper divisors (203390464).

406780922 is a wasteful number, since it uses less digits than its factorization.

406780922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203390463.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 406780922 is about 20168.8106243279. The cubic root of 406780922 is about 740.9465134413.

The spelling of 406780922 in words is "four hundred six million, seven hundred eighty thousand, nine hundred twenty-two".