84354919 has 4 divisors (see below), whose sum is σ = 92023560. Its totient is φ = 76686280.

The previous prime is 84354913. The next prime is 84354923. The reversal of 84354919 is 91945348.

It is a happy number.

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

It is not a de Polignac number, because 84354919 - 2²⁵ = 50800487 is a prime.

It is a super-2 number, since 2×84354919² = 14231504718993122, 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 (84354913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3834304 + ... + 3834325.

It is an arithmetic number, because the mean of its divisors is an integer number (23005890).

Almost surely, 2^84354919 is an apocalyptic number.

84354919 is a deficient number, since it is larger than the sum of its proper divisors (7668641).

84354919 is a wasteful number, since it uses less digits than its factorization.

84354919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7668640.

The product of its digits is 155520, while the sum is 43.

The square root of 84354919 is about 9184.4933992028. The cubic root of 84354919 is about 438.5678625933.

The spelling of 84354919 in words is "eighty-four million, three hundred fifty-four thousand, nine hundred nineteen".