407855620 has 12 divisors (see below), whose sum is σ = 856496844. Its totient is φ = 163142240.

The previous prime is 407855603. The next prime is 407855621. The reversal of 407855620 is 26558704.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 86155524 + 321700096 = 9282^2 + 17936^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 407855620.

It is not an unprimeable number, because it can be changed into a prime (407855621) 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 3 ways as a sum of consecutive naturals, for example, 10196371 + ... + 10196410.

It is an arithmetic number, because the mean of its divisors is an integer number (71374737).

Almost surely, 2^407855620 is an apocalyptic number.

It is an amenable number.

407855620 is an abundant number, since it is smaller than the sum of its proper divisors (448641224).

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

407855620 is a wasteful number, since it uses less digits than its factorization.

407855620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20392790 (or 20392788 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 407855620 is about 20195.4356229322. The cubic root of 407855620 is about 741.5984560984.

The spelling of 407855620 in words is "four hundred seven million, eight hundred fifty-five thousand, six hundred twenty".