84436398 has 32 divisors (see below), whose sum is σ = 189907200. Its totient is φ = 27804888.

The previous prime is 84436397. The next prime is 84436403. The reversal of 84436398 is 89363448.

84436398 is a `hidden beast` number, since 8 + 4 + 4 + 3 + 639 + 8 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84436397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4938 + ... + 13901.

It is an arithmetic number, because the mean of its divisors is an integer number (5934600).

Almost surely, 2^84436398 is an apocalyptic number.

84436398 is an abundant number, since it is smaller than the sum of its proper divisors (105470802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84436398 is a wasteful number, since it uses less digits than its factorization.

84436398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18933 (or 18927 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 84436398 is about 9188.9280114712. The cubic root of 84436398 is about 438.7090223984.

It can be divided in two parts, 8443 and 6398, that added together give a palindrome (14841).

The spelling of 84436398 in words is "eighty-four million, four hundred thirty-six thousand, three hundred ninety-eight".