99869761 has 2 divisors, whose sum is σ = 99869762. Its totient is φ = 99869760.

The previous prime is 99869753. The next prime is 99869789. The reversal of 99869761 is 16796899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99600400 + 269361 = 9980^2 + 519^2 .

It is a cyclic number.

It is not a de Polignac number, because 99869761 - 2³ = 99869753 is a prime.

It is not a weakly prime, because it can be changed into another prime (99869711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49934880 + 49934881.

It is an arithmetic number, because the mean of its divisors is an integer number (49934881).

Almost surely, 2^99869761 is an apocalyptic number.

It is an amenable number.

99869761 is a deficient number, since it is larger than the sum of its proper divisors (1).

99869761 is an equidigital number, since it uses as much as digits as its factorization.

99869761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 55.

The square root of 99869761 is about 9993.4859283435. The cubic root of 99869761 is about 463.9572905224.

The spelling of 99869761 in words is "ninety-nine million, eight hundred sixty-nine thousand, seven hundred sixty-one".