104435861 has 2 divisors, whose sum is σ = 104435862. Its totient is φ = 104435860.

The previous prime is 104435827. The next prime is 104435899. The reversal of 104435861 is 168534401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79744900 + 24690961 = 8930^2 + 4969^2 .

It is a cyclic number.

It is not a de Polignac number, because 104435861 - 2¹⁸ = 104173717 is a prime.

It is a super-2 number, since 2×104435861² = 21813698125622642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104435561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52217930 + 52217931.

It is an arithmetic number, because the mean of its divisors is an integer number (52217931).

Almost surely, 2^104435861 is an apocalyptic number.

It is an amenable number.

104435861 is a deficient number, since it is larger than the sum of its proper divisors (1).

104435861 is an equidigital number, since it uses as much as digits as its factorization.

104435861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 104435861 is about 10219.3865275759. The cubic root of 104435861 is about 470.9229803004.

The spelling of 104435861 in words is "one hundred four million, four hundred thirty-five thousand, eight hundred sixty-one".