84728437 has 2 divisors, whose sum is σ = 84728438. Its totient is φ = 84728436.

The previous prime is 84728419. The next prime is 84728461. The reversal of 84728437 is 73482748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74545956 + 10182481 = 8634^2 + 3191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84728437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84728393 and 84728402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84728407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42364218 + 42364219.

It is an arithmetic number, because the mean of its divisors is an integer number (42364219).

Almost surely, 2^84728437 is an apocalyptic number.

It is an amenable number.

84728437 is a deficient number, since it is larger than the sum of its proper divisors (1).

84728437 is an equidigital number, since it uses as much as digits as its factorization.

84728437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 301056, while the sum is 43.

The square root of 84728437 is about 9204.8051038574. The cubic root of 84728437 is about 439.2142260044.

The spelling of 84728437 in words is "eighty-four million, seven hundred twenty-eight thousand, four hundred thirty-seven".