84253787 has 4 divisors (see below), whose sum is σ = 87159120. Its totient is φ = 81348456.

The previous prime is 84253781. The next prime is 84253789. The reversal of 84253787 is 78735248.

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 84253787 - 2¹² = 84249691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84253781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1452623 + ... + 1452680.

It is an arithmetic number, because the mean of its divisors is an integer number (21789780).

Almost surely, 2^84253787 is an apocalyptic number.

84253787 is a deficient number, since it is larger than the sum of its proper divisors (2905333).

84253787 is a wasteful number, since it uses less digits than its factorization.

84253787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905332.

The product of its digits is 376320, while the sum is 44.

The square root of 84253787 is about 9178.9861640597. The cubic root of 84253787 is about 438.3925280968.

The spelling of 84253787 in words is "eighty-four million, two hundred fifty-three thousand, seven hundred eighty-seven".