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BaseRepresentation
bin11010101101001110011101
3111011200112220
4122231032131
53243012424
6410015553
7113336022
oct32551635
914150486
107000989
113a51a46
1224175b9
1315b17c8
14d03549
15934579

7000989 has 4 divisors (see below), whose sum is σ = 9334656. Its totient is φ = 4667324.

The previous prime is 7000969. The next prime is 7001003. The reversal of 7000989 is 9890007.

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: 9890007 = 33296669.

It is a cyclic number.

It is not a de Polignac number, because 7000989 - 211 = 6998941 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7000969) 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, 1166829 + ... + 1166834.

It is an arithmetic number, because the mean of its divisors is an integer number (2333664).

Almost surely, 27000989 is an apocalyptic number.

It is an amenable number.

7000989 is a deficient number, since it is larger than the sum of its proper divisors (2333667).

7000989 is a wasteful number, since it uses less digits than its factorization.

7000989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333666.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 7000989 is about 2645.9382078953. The cubic root of 7000989 is about 191.3021268479.

The spelling of 7000989 in words is "seven million, nine hundred eighty-nine", and thus it is an aban number.

Divisors: 1 3 2333663 7000989