407020811 has 4 divisors (see below), whose sum is σ = 424717392. Its totient is φ = 389324232.

The previous prime is 407020787. The next prime is 407020819. The reversal of 407020811 is 118020704.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 407020811 - 2¹⁰ = 407019787 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 17696557 = 407020811 / (4 + 0 + 7 + 0 + 2 + 0 + 8 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (407020819) 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, 8848256 + ... + 8848301.

It is an arithmetic number, because the mean of its divisors is an integer number (106179348).

Almost surely, 2^407020811 is an apocalyptic number.

407020811 is a deficient number, since it is larger than the sum of its proper divisors (17696581).

407020811 is a wasteful number, since it uses less digits than its factorization.

407020811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17696580.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 407020811 is about 20174.7567767247. The cubic root of 407020811 is about 741.0921364534.

The spelling of 407020811 in words is "four hundred seven million, twenty thousand, eight hundred eleven".