99400841 has 2 divisors, whose sum is σ = 99400842. Its totient is φ = 99400840.

The previous prime is 99400813. The next prime is 99400897. The reversal of 99400841 is 14800499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50694400 + 48706441 = 7120^2 + 6979^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99400841 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99400541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49700420 + 49700421.

It is an arithmetic number, because the mean of its divisors is an integer number (49700421).

Almost surely, 2^99400841 is an apocalyptic number.

It is an amenable number.

99400841 is a deficient number, since it is larger than the sum of its proper divisors (1).

99400841 is an equidigital number, since it uses as much as digits as its factorization.

99400841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 99400841 is about 9969.9970411229. The cubic root of 99400841 is about 463.2300091647.

The spelling of 99400841 in words is "ninety-nine million, four hundred thousand, eight hundred forty-one".