99158401 has 2 divisors, whose sum is σ = 99158402. Its totient is φ = 99158400.

The previous prime is 99158383. The next prime is 99158407. The reversal of 99158401 is 10485199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53582400 + 45576001 = 7320^2 + 6751^2 .

It is an emirp because it is prime and its reverse (10485199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99158401 - 2⁷ = 99158273 is a prime.

It is not a weakly prime, because it can be changed into another prime (99158407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49579200 + 49579201.

It is an arithmetic number, because the mean of its divisors is an integer number (49579201).

Almost surely, 2^99158401 is an apocalyptic number.

It is an amenable number.

99158401 is a deficient number, since it is larger than the sum of its proper divisors (1).

99158401 is an equidigital number, since it uses as much as digits as its factorization.

99158401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 99158401 is about 9957.8311393596. The cubic root of 99158401 is about 462.8530944724.

The spelling of 99158401 in words is "ninety-nine million, one hundred fifty-eight thousand, four hundred one".