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4790989 = 7684427
BaseRepresentation
bin10010010001101011001101
3100000102000001
4102101223031
52211302424
6250404301
755502620
oct22215315
910012001
104790989
1127825a5
121730691
13cb9908
148c9db7
15649844
hex491acd

4790989 has 4 divisors (see below), whose sum is σ = 5475424. Its totient is φ = 4106556.

The previous prime is 4790987. The next prime is 4790999. The reversal of 4790989 is 9890974.

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 4790989 - 21 = 4790987 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 (4790987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342207 + ... + 342220.

It is an arithmetic number, because the mean of its divisors is an integer number (1368856).

Almost surely, 24790989 is an apocalyptic number.

It is an amenable number.

4790989 is a deficient number, since it is larger than the sum of its proper divisors (684435).

4790989 is an equidigital number, since it uses as much as digits as its factorization.

4790989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684434.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 4790989 is about 2188.8327939795. The cubic root of 4790989 is about 168.5809089961.

The spelling of 4790989 in words is "four million, seven hundred ninety thousand, nine hundred eighty-nine".

Divisors: 1 7 684427 4790989