407402660 has 36 divisors (see below), whose sum is σ = 995228892. Its totient is φ = 139680576.

The previous prime is 407402659. The next prime is 407402669. The reversal of 407402660 is 66204704.

It can be written as a sum of positive squares in 2 ways, for example, as 278489344 + 128913316 = 16688^2 + 11354^2 .

It is not an unprimeable number, because it can be changed into a prime (407402669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206879 + ... + 208838.

It is an arithmetic number, because the mean of its divisors is an integer number (27645247).

Almost surely, 2^407402660 is an apocalyptic number.

It is an amenable number.

407402660 is an abundant number, since it is smaller than the sum of its proper divisors (587826232).

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

407402660 is a wasteful number, since it uses less digits than its factorization.

407402660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415740 (or 415731 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 407402660 is about 20184.2180923612. The cubic root of 407402660 is about 741.3238173526.

The spelling of 407402660 in words is "four hundred seven million, four hundred two thousand, six hundred sixty".