407926705540 has 12 divisors (see below), whose sum is σ = 856646081676. Its totient is φ = 163170682208.

The previous prime is 407926705523. The next prime is 407926705559. The reversal of 407926705540 is 45507629704.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 245601518724 + 162325186816 = 495582^2 + 402896^2 .

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, 10198167619 + ... + 10198167658.

It is an arithmetic number, because the mean of its divisors is an integer number (71387173473).

Almost surely, 2^407926705540 is an apocalyptic number.

It is an amenable number.

407926705540 is an abundant number, since it is smaller than the sum of its proper divisors (448719376136).

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

407926705540 is a wasteful number, since it uses less digits than its factorization.

407926705540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20396335286 (or 20396335284 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 407926705540 in words is "four hundred seven billion, nine hundred twenty-six million, seven hundred five thousand, five hundred forty".