84238513 has 2 divisors, whose sum is σ = 84238514. Its totient is φ = 84238512.

The previous prime is 84238493. The next prime is 84238537. The reversal of 84238513 is 31583248.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71791729 + 12446784 = 8473^2 + 3528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84238513 is a prime.

It is a super-2 number, since 2×84238513² = 14192254144902338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84238543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42119256 + 42119257.

It is an arithmetic number, because the mean of its divisors is an integer number (42119257).

Almost surely, 2^84238513 is an apocalyptic number.

It is an amenable number.

84238513 is a deficient number, since it is larger than the sum of its proper divisors (1).

84238513 is an equidigital number, since it uses as much as digits as its factorization.

84238513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 34.

The square root of 84238513 is about 9178.1541172504. The cubic root of 84238513 is about 438.3660350754.

The spelling of 84238513 in words is "eighty-four million, two hundred thirty-eight thousand, five hundred thirteen".