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9830989 = 71404427
BaseRepresentation
bin100101100000…
…001001001101
3200111110120201
4211200021031
510004042424
6550413501
7146363530
oct45401115
920443521
109830989
115605193
123361291
13206296c
14143ca17
15ce2d44
hex96024d

9830989 has 4 divisors (see below), whose sum is σ = 11235424. Its totient is φ = 8426556.

The previous prime is 9830987. The next prime is 9831013. The reversal of 9830989 is 9890389.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9890389 = 41241229.

It is a cyclic number.

It is not a de Polignac number, because 9830989 - 21 = 9830987 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9830987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702207 + ... + 702220.

It is an arithmetic number, because the mean of its divisors is an integer number (2808856).

Almost surely, 29830989 is an apocalyptic number.

It is an amenable number.

9830989 is a deficient number, since it is larger than the sum of its proper divisors (1404435).

9830989 is a wasteful number, since it uses less digits than its factorization.

9830989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404434.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 9830989 is about 3135.4407983567. The cubic root of 9830989 is about 214.2228223263. Note that the first 3 decimals are identical.

The spelling of 9830989 in words is "nine million, eight hundred thirty thousand, nine hundred eighty-nine".

Divisors: 1 7 1404427 9830989