99894961 has 2 divisors, whose sum is σ = 99894962. Its totient is φ = 99894960.

The previous prime is 99894953. The next prime is 99894973. The reversal of 99894961 is 16949899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58614336 + 41280625 = 7656^2 + 6425^2 .

It is an emirp because it is prime and its reverse (16949899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99894961 - 2³ = 99894953 is a prime.

It is not a weakly prime, because it can be changed into another prime (99894661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49947480 + 49947481.

It is an arithmetic number, because the mean of its divisors is an integer number (49947481).

Almost surely, 2^99894961 is an apocalyptic number.

It is an amenable number.

99894961 is a deficient number, since it is larger than the sum of its proper divisors (1).

99894961 is an equidigital number, since it uses as much as digits as its factorization.

99894961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1259712, while the sum is 55.

The square root of 99894961 is about 9994.7466701263. The cubic root of 99894961 is about 463.9963104765.

It can be divided in two parts, 998 and 94961, that added together give a palindrome (95959).

The spelling of 99894961 in words is "ninety-nine million, eight hundred ninety-four thousand, nine hundred sixty-one".