84925439 has 4 divisors (see below), whose sum is σ = 85352400. Its totient is φ = 84498480.

The previous prime is 84925429. The next prime is 84925447. The reversal of 84925439 is 93452948.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84925439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84925439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84925409) 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, 213182 + ... + 213579.

It is an arithmetic number, because the mean of its divisors is an integer number (21338100).

Almost surely, 2^84925439 is an apocalyptic number.

84925439 is a deficient number, since it is larger than the sum of its proper divisors (426961).

84925439 is a wasteful number, since it uses less digits than its factorization.

84925439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426960.

The product of its digits is 311040, while the sum is 44.

The square root of 84925439 is about 9215.4999321795. The cubic root of 84925439 is about 439.5543680312.

It can be divided in two parts, 8492 and 5439, that added together give a palindrome (13931).

The spelling of 84925439 in words is "eighty-four million, nine hundred twenty-five thousand, four hundred thirty-nine".