407020855 has 16 divisors (see below), whose sum is σ = 505350144. Its totient is φ = 314382240.

The previous prime is 407020819. The next prime is 407020879. The reversal of 407020855 is 558020704.

It is a de Polignac number, because none of the positive numbers 2^k-407020855 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69574 + ... + 75196.

It is an arithmetic number, because the mean of its divisors is an integer number (31584384).

Almost surely, 2^407020855 is an apocalyptic number.

407020855 is a deficient number, since it is larger than the sum of its proper divisors (98329289).

407020855 is a wasteful number, since it uses less digits than its factorization.

407020855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6126.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 407020855 is about 20174.7578671963. The cubic root of 407020855 is about 741.0921631580.

The spelling of 407020855 in words is "four hundred seven million, twenty thousand, eight hundred fifty-five".