84349519 has 4 divisors (see below), whose sum is σ = 85732360. Its totient is φ = 82966680.

The previous prime is 84349513. The next prime is 84349567. The reversal of 84349519 is 91594348.

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 84349519 - 2³ = 84349511 is a prime.

It is a super-2 number, since 2×84349519² = 14229682711062722, 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 (84349511) 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, 691329 + ... + 691450.

It is an arithmetic number, because the mean of its divisors is an integer number (21433090).

Almost surely, 2^84349519 is an apocalyptic number.

84349519 is the 5303-rd hex number.

84349519 is a deficient number, since it is larger than the sum of its proper divisors (1382841).

84349519 is a wasteful number, since it uses less digits than its factorization.

84349519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382840.

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

The square root of 84349519 is about 9184.1994207443. The cubic root of 84349519 is about 438.5585040519.

The spelling of 84349519 in words is "eighty-four million, three hundred forty-nine thousand, five hundred nineteen".