408489673 has 4 divisors (see below), whose sum is σ = 409271248. Its totient is φ = 407708100.

The previous prime is 408489671. The next prime is 408489691. The reversal of 408489673 is 376984804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 408489673 - 2¹ = 408489671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (408489671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390003 + ... + 391048.

It is an arithmetic number, because the mean of its divisors is an integer number (102317812).

Almost surely, 2^408489673 is an apocalyptic number.

It is an amenable number.

408489673 is a deficient number, since it is larger than the sum of its proper divisors (781575).

408489673 is an equidigital number, since it uses as much as digits as its factorization.

408489673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781574.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The square root of 408489673 is about 20211.1274549442. The cubic root of 408489673 is about 741.9825538433.

The spelling of 408489673 in words is "four hundred eight million, four hundred eighty-nine thousand, six hundred seventy-three".