1479809 has 2 divisors, whose sum is σ = 1479810. Its totient is φ = 1479808.

The previous prime is 1479791. The next prime is 1479817. The reversal of 1479809 is 9089741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1149184 + 330625 = 1072^2 + 575^2 .

It is a cyclic number.

It is not a de Polignac number, because 1479809 - 2⁸ = 1479553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1479839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739904 + 739905.

It is an arithmetic number, because the mean of its divisors is an integer number (739905).

2^1479809 is an apocalyptic number.

It is an amenable number.

1479809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1479809 is an equidigital number, since it uses as much as digits as its factorization.

1479809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1479809 is about 1216.4740030103. The cubic root of 1479809 is about 113.9554817453.

The spelling of 1479809 in words is "one million, four hundred seventy-nine thousand, eight hundred nine".