84536399 has 4 divisors (see below), whose sum is σ = 85606560. Its totient is φ = 83466240.

The previous prime is 84536369. The next prime is 84536437. The reversal of 84536399 is 99363548.

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 84536399 - 2¹⁶ = 84470863 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 (84536369) 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, 534962 + ... + 535119.

It is an arithmetic number, because the mean of its divisors is an integer number (21401640).

Almost surely, 2^84536399 is an apocalyptic number.

84536399 is a deficient number, since it is larger than the sum of its proper divisors (1070161).

84536399 is a wasteful number, since it uses less digits than its factorization.

84536399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070160.

The product of its digits is 699840, while the sum is 47.

The square root of 84536399 is about 9194.3677868573. The cubic root of 84536399 is about 438.8821469194.

The spelling of 84536399 in words is "eighty-four million, five hundred thirty-six thousand, three hundred ninety-nine".