84140338 has 4 divisors (see below), whose sum is σ = 126210510. Its totient is φ = 42070168.

The previous prime is 84140321. The next prime is 84140363. The reversal of 84140338 is 83304148.

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

It can be written as a sum of positive squares in only one way, i.e., 78269409 + 5870929 = 8847^2 + 2423^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21035083 + ... + 21035086.

Almost surely, 2^84140338 is an apocalyptic number.

84140338 is a deficient number, since it is larger than the sum of its proper divisors (42070172).

84140338 is a wasteful number, since it uses less digits than its factorization.

84140338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42070171.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 84140338 is about 9172.8042604211. The cubic root of 84140338 is about 438.1956723215.

The spelling of 84140338 in words is "eighty-four million, one hundred forty thousand, three hundred thirty-eight".