84782389 has 4 divisors (see below), whose sum is σ = 89244640. Its totient is φ = 80320140.

The previous prime is 84782387. The next prime is 84782437. The reversal of 84782389 is 98328748.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84782389 - 2¹ = 84782387 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 (84782381) 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, 2231097 + ... + 2231134.

It is an arithmetic number, because the mean of its divisors is an integer number (22311160).

Almost surely, 2^84782389 is an apocalyptic number.

It is an amenable number.

84782389 is a deficient number, since it is larger than the sum of its proper divisors (4462251).

84782389 is a wasteful number, since it uses less digits than its factorization.

84782389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4462250.

The product of its digits is 774144, while the sum is 49.

The square root of 84782389 is about 9207.7352807300. The cubic root of 84782389 is about 439.3074314611.

The spelling of 84782389 in words is "eighty-four million, seven hundred eighty-two thousand, three hundred eighty-nine".