104899861 has 6 divisors (see below), whose sum is σ = 115303286. Its totient is φ = 95363400.

The previous prime is 104899859. The next prime is 104899889. The reversal of 104899861 is 168998401.

It can be written as a sum of positive squares in only one way, i.e., 73427761 + 31472100 = 8569^2 + 5610^2 .

It is not a de Polignac number, because 104899861 - 2¹ = 104899859 is a prime.

It is a super-2 number, since 2×104899861² = 22007961675638642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104899801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 433350 + ... + 433591.

Almost surely, 2^104899861 is an apocalyptic number.

104899861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

104899861 is a deficient number, since it is larger than the sum of its proper divisors (10403425).

104899861 is an equidigital number, since it uses as much as digits as its factorization.

104899861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866963 (or 866952 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 104899861 is about 10242.0633175157. The cubic root of 104899861 is about 471.6193740882.

The spelling of 104899861 in words is "one hundred four million, eight hundred ninety-nine thousand, eight hundred sixty-one".