104553989 has 2 divisors, whose sum is σ = 104553990. Its totient is φ = 104553988.

The previous prime is 104553983. The next prime is 104553997. The reversal of 104553989 is 989355401.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104550625 + 3364 = 10225^2 + 58^2 .

It is a cyclic number.

It is not a de Polignac number, because 104553989 - 2⁸ = 104553733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104553983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52276994 + 52276995.

It is an arithmetic number, because the mean of its divisors is an integer number (52276995).

Almost surely, 2^104553989 is an apocalyptic number.

It is an amenable number.

104553989 is a deficient number, since it is larger than the sum of its proper divisors (1).

104553989 is an equidigital number, since it uses as much as digits as its factorization.

104553989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 104553989 is about 10225.1644974543. The cubic root of 104553989 is about 471.1004679574.

The spelling of 104553989 in words is "one hundred four million, five hundred fifty-three thousand, nine hundred eighty-nine".