890343009 has 32 divisors (see below), whose sum is σ = 1339866880. Its totient is φ = 591539760.

The previous prime is 890342969. The next prime is 890343011. The reversal of 890343009 is 900343098.

It is not a de Polignac number, because 890343009 - 2⁷ = 890342881 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890343709) 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 31 ways as a sum of consecutive naturals, for example, 920244 + ... + 921210.

It is an arithmetic number, because the mean of its divisors is an integer number (41870840).

Almost surely, 2^890343009 is an apocalyptic number.

It is an amenable number.

890343009 is a deficient number, since it is larger than the sum of its proper divisors (449523871).

890343009 is an frugal number, since it uses more digits than its factorization.

With its successor (890343010) it forms an eRAP, since the sums of their prime factors are consecutive (1409 and 1410).

890343009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409 (or 1391 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 890343009 is about 29838.6160704547. The cubic root of 890343009 is about 962.0237289254.

The spelling of 890343009 in words is "eight hundred ninety million, three hundred forty-three thousand, nine".