104421389 has 2 divisors, whose sum is σ = 104421390. Its totient is φ = 104421388.

The previous prime is 104421377. The next prime is 104421479. The reversal of 104421389 is 983124401.

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., 101163364 + 3258025 = 10058^2 + 1805^2 .

It is a cyclic number.

It is not a de Polignac number, because 104421389 - 2²⁰ = 103372813 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 (104421689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52210694 + 52210695.

It is an arithmetic number, because the mean of its divisors is an integer number (52210695).

Almost surely, 2^104421389 is an apocalyptic number.

It is an amenable number.

104421389 is a deficient number, since it is larger than the sum of its proper divisors (1).

104421389 is an equidigital number, since it uses as much as digits as its factorization.

104421389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 104421389 is about 10218.6784370583. The cubic root of 104421389 is about 470.9012268780.

The spelling of 104421389 in words is "one hundred four million, four hundred twenty-one thousand, three hundred eighty-nine".