84004519 has 4 divisors (see below), whose sum is σ = 84948480. Its totient is φ = 83060560.

The previous prime is 84004517. The next prime is 84004537. The reversal of 84004519 is 91540048.

It is a happy number.

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 84004519 - 2¹ = 84004517 is a prime.

It is a super-2 number, since 2×84004519² = 14113518424842722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84004517) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 471847 + ... + 472024.

It is an arithmetic number, because the mean of its divisors is an integer number (21237120).

Almost surely, 2^84004519 is an apocalyptic number.

84004519 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

84004519 is a deficient number, since it is larger than the sum of its proper divisors (943961).

84004519 is an equidigital number, since it uses as much as digits as its factorization.

84004519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943960.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 84004519 is about 9165.3979182576. The cubic root of 84004519 is about 437.9597674380.

The spelling of 84004519 in words is "eighty-four million, four thousand, five hundred nineteen".