99385457 has 2 divisors, whose sum is σ = 99385458. Its totient is φ = 99385456.

The previous prime is 99385453. The next prime is 99385463. The reversal of 99385457 is 75458399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97436641 + 1948816 = 9871^2 + 1396^2 .

It is an emirp because it is prime and its reverse (75458399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99385457 - 2² = 99385453 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99385453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49692728 + 49692729.

It is an arithmetic number, because the mean of its divisors is an integer number (49692729).

Almost surely, 2^99385457 is an apocalyptic number.

It is an amenable number.

99385457 is a deficient number, since it is larger than the sum of its proper divisors (1).

99385457 is an equidigital number, since it uses as much as digits as its factorization.

99385457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1360800, while the sum is 50.

The square root of 99385457 is about 9969.2254964967. The cubic root of 99385457 is about 463.2061103121.

The spelling of 99385457 in words is "ninety-nine million, three hundred eighty-five thousand, four hundred fifty-seven".