84378503 has 12 divisors (see below), whose sum is σ = 92973384. Its totient is φ = 76520400.

The previous prime is 84378493. The next prime is 84378521. The reversal of 84378503 is 30587348.

It is a happy number.

It is not a de Polignac number, because 84378503 - 2¹⁰ = 84377479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84378103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82133 + ... + 83153.

It is an arithmetic number, because the mean of its divisors is an integer number (7747782).

Almost surely, 2^84378503 is an apocalyptic number.

84378503 is a deficient number, since it is larger than the sum of its proper divisors (8594881).

84378503 is a wasteful number, since it uses less digits than its factorization.

84378503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726 (or 1715 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 84378503 is about 9185.7772126260. Note that the first 3 decimals coincide. The cubic root of 84378503 is about 438.6087304756.

The spelling of 84378503 in words is "eighty-four million, three hundred seventy-eight thousand, five hundred three".