84857441 has 2 divisors, whose sum is σ = 84857442. Its totient is φ = 84857440.

The previous prime is 84857411. The next prime is 84857449. The reversal of 84857441 is 14475848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72607441 + 12250000 = 8521^2 + 3500^2 .

It is a cyclic number.

It is not a de Polignac number, because 84857441 - 2¹⁰ = 84856417 is a prime.

It is not a weakly prime, because it can be changed into another prime (84857449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42428720 + 42428721.

It is an arithmetic number, because the mean of its divisors is an integer number (42428721).

Almost surely, 2^84857441 is an apocalyptic number.

It is an amenable number.

84857441 is a deficient number, since it is larger than the sum of its proper divisors (1).

84857441 is an equidigital number, since it uses as much as digits as its factorization.

84857441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 143360, while the sum is 41.

The square root of 84857441 is about 9211.8098656019. The cubic root of 84857441 is about 439.4370227499.

The spelling of 84857441 in words is "eighty-four million, eight hundred fifty-seven thousand, four hundred forty-one".