406710440 has 32 divisors (see below), whose sum is σ = 919761480. Its totient is φ = 161855232.

The previous prime is 406710433. The next prime is 406710443. The reversal of 406710440 is 44017604.

It can be written as a sum of positive squares in 4 ways, for example, as 388168804 + 18541636 = 19702^2 + 4306^2 .

It is not an unprimeable number, because it can be changed into a prime (406710443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17927 + ... + 33686.

Almost surely, 2^406710440 is an apocalyptic number.

406710440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

406710440 is an abundant number, since it is smaller than the sum of its proper divisors (513051040).

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

406710440 is a wasteful number, since it uses less digits than its factorization.

406710440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51821 (or 51817 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 406710440 is about 20167.0632467893. The cubic root of 406710440 is about 740.9037169335.

The spelling of 406710440 in words is "four hundred six million, seven hundred ten thousand, four hundred forty".