84412378 has 8 divisors (see below), whose sum is σ = 134066772. Its totient is φ = 39723456.

The previous prime is 84412357. The next prime is 84412439. The reversal of 84412378 is 87321448.

It can be written as a sum of positive squares in 2 ways, for example, as 83667609 + 744769 = 9147^2 + 863^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×84412378² = 14250899119229768, which contains 22 as substring.

It is an unprimeable number.

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, 1241325 + ... + 1241392.

Almost surely, 2^84412378 is an apocalyptic number.

84412378 is a deficient number, since it is larger than the sum of its proper divisors (49654394).

84412378 is a wasteful number, since it uses less digits than its factorization.

84412378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2482736.

The product of its digits is 43008, while the sum is 37.

The square root of 84412378 is about 9187.6209107690. The cubic root of 84412378 is about 438.6674179467.

The spelling of 84412378 in words is "eighty-four million, four hundred twelve thousand, three hundred seventy-eight".