406648772 has 12 divisors (see below), whose sum is σ = 753496380. Its totient is φ = 191364096.

The previous prime is 406648769. The next prime is 406648777. The reversal of 406648772 is 277846604.

It can be written as a sum of positive squares in 2 ways, for example, as 117852736 + 288796036 = 10856^2 + 16994^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (406648777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2989997 + ... + 2990132.

It is an arithmetic number, because the mean of its divisors is an integer number (62791365).

Almost surely, 2^406648772 is an apocalyptic number.

It is an amenable number.

406648772 is a deficient number, since it is larger than the sum of its proper divisors (346847608).

406648772 is a wasteful number, since it uses less digits than its factorization.

406648772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5980150 (or 5980148 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 44.

The square root of 406648772 is about 20165.5342602174. The cubic root of 406648772 is about 740.8662682105.

The spelling of 406648772 in words is "four hundred six million, six hundred forty-eight thousand, seven hundred seventy-two".