8400785415 has 16 divisors (see below), whose sum is σ = 14663189376. Its totient is φ = 4073108000.

The previous prime is 8400785413. The next prime is 8400785431. The reversal of 8400785415 is 5145870048.

It is not a de Polignac number, because 8400785415 - 2¹ = 8400785413 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8400785413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25456761 + ... + 25457090.

It is an arithmetic number, because the mean of its divisors is an integer number (916449336).

Almost surely, 2^8400785415 is an apocalyptic number.

8400785415 is a deficient number, since it is larger than the sum of its proper divisors (6262403961).

8400785415 is a wasteful number, since it uses less digits than its factorization.

8400785415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50913870.

The product of its (nonzero) digits is 179200, while the sum is 42.

The square root of 8400785415 is about 91655.7985890691. The cubic root of 8400785415 is about 2032.8560682381.

The spelling of 8400785415 in words is "eight billion, four hundred million, seven hundred eighty-five thousand, four hundred fifteen".