406951940 has 12 divisors (see below), whose sum is σ = 854599116. Its totient is φ = 162780768.

The previous prime is 406951913. The next prime is 406951981. The reversal of 406951940 is 49159604.

It can be written as a sum of positive squares in 2 ways, for example, as 258502084 + 148449856 = 16078^2 + 12184^2 .

It is a junction number, because it is equal to n+sod(n) for n = 406951894 and 406951903.

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, 10173779 + ... + 10173818.

It is an arithmetic number, because the mean of its divisors is an integer number (71216593).

Almost surely, 2^406951940 is an apocalyptic number.

It is an amenable number.

406951940 is an abundant number, since it is smaller than the sum of its proper divisors (447647176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406951940 is a wasteful number, since it uses less digits than its factorization.

406951940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20347606 (or 20347604 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 406951940 is about 20173.0498437891. The cubic root of 406951940 is about 741.0503346305.

The spelling of 406951940 in words is "four hundred six million, nine hundred fifty-one thousand, nine hundred forty".